Browser Extensions 



Close

Why is ReviewMeta.com a Must-Have for Amazon Shoppers?


Free Phone Apps

Free Browser Extensions




Wusthof 2-Stage Pull Through Knife Sharpener
More product info From WUSTHOF

Amazon Reviews for  Wusthof 2-Stage Pull Through Knife Sharpener
Rating:
561 Ratings
152 Reviews
("Ratings" vs. "Reviews")
7% of potentially unnatural reviews removed (why?)
Adjusted:
View/Edit Adjustment
Jump to Report Card
Report Info:
Last Updated: Aug 3, 2020
Refresh Report
Show Report History
Note: While Amazon.co.uk claims 561 Ratings, we counted 152 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".

Report Card

Pass Overall Grade
FAIL Unverified Purchases
FAIL Word Count Comparison
WARN Deleted Reviews
WARN Reviewer Participation
PASS Rating Trend
PASS Phrase Repetition
PASS Suspicious Reviewers
PASS Overlapping Review History
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews

Most Trusted Reviews

Tried it on other Wusthof knives - it just blunts ... [Go to full review]
Aug 14, 2019      
100% TRUST
  • Verified Purchaser
  • Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
  • Overlapping Review History: reviewed 1 of 9 top products
  • Critical Reviewer (avg. rating: 4.4)


Least Trusted Reviews

Easy to use and very effective [Go to full review]
Oct 11, 2014      
0% TRUST
  • Unverified Purchaser
  • Overrepresented word count (6 words)
  • Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
  • Overrepresented Participation (posted 14 Reviews)
  • Critical Reviewer (avg. rating: 3.0)


Analysis Details

Fail Unverified Purchases

10 of the 152 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.2 while the verified purchasers have rated this product an average of 4.2. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.

from unverified purchasers

from verified purchases


3.2
4.2


Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.

Fail Word Count Comparison

  • 32%
  • Have an overrepresented word count

In the graph above, we can see the distribution of review word counts for this product and the expected distribution for this category. We see the following 1 group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 49 reviews (or 32%) are within an overrepresented word count group. These reviews have rated this product an average of 4.6, while all other reviews have rated this product an average of 4.0. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.

from reviews with an overrepresented word count

from reviews with a properly represented word count


4.6
4.0


Read more about our Word Count Comparison test.

Warn Deleted Reviews

We discovered a total of 1 deleted Review for this product, with an average rating of 5. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.

There are a few limitations to keep in mind regarding the Deleted Reviews test:
  1. We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
  2. We have no information on reviews that were never published in the first place.
  3. We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
Read more about our Deleted Reviews test.

5.0 average rating of deleted reviews

5.0


Show distribution of deleted reviews

Warn Reviewer Participation

  • 86%
  • From reviewers with an overrepresented participation

We see the following 3 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 131 reviewers (or 86%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


4.2
4.2


Read more about our Reviewer Participation test.

Pass Rating Trend

  • 0%
  • Created on high-volume days
We counted 152 reviews for this product over the span of 3,248 days, an average of 0.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.

Pass Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.

Common Phrases in Reviews:
3 reviews
(5.0/5)
2 reviews
(5.0/5)
6 reviews
(2.7/5)
3 reviews
(4.3/5)
4 reviews
(5.0/5)
2 reviews
(2.5/5)
2 reviews
(2.0/5)
2 reviews
(5.0/5)
2 reviews
(4.0/5)
2 reviews
(5.0/5)
Show MoreShow Less
Common Phrases in Titles:
7 reviews
(3.6/5)
3 reviews
(5.0/5)
2 reviews
(5.0/5)
2 reviews
(4.5/5)
2 reviews
(5.0/5)
2 reviews
(3.0/5)
Show MoreShow Less


21 of the 152 total reviews for this product use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.1
4.2


Read more about our Phrase Repetition test.

Pass Suspicious Reviewers

One-Hit Wonders


7 of the 152 reviewers have only reviewed this product. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from one-hit wonders

from reviewers with more than one review


3.9
4.2


Never-Verified Reviewers


3 of the 152 reviewers have never written a verified purchase review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from never-verified reviewers

from reviewers with at least one verified purchase review


3.3
4.2


Take-Back Reviewers


29 of the 152 reviewers have had at least one of their past reviews for another product deleted. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from take-back reviewers

from reviewers without previously deleted reviews


4.2
4.2


Single-Day Reviewers


7 of the 152 reviewers have written multiple reviews but posted all of them on a single day. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from single-day reviewers

from non-single-day reviewers


4.3
4.2


Read more about our Suspicious Reviewers test.

Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:

Does not include products
from the same brand


25 of the 152 reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


3.9
4.2


Read more about our Overlapping Review History test.

Pass Reviewer Ease
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.3, while the average ease score for reviewers in this category is 4.4.

4.3 Product's Average Ease Score

4.4 Category's Average Ease Score


4.3
4.4


Read more about our Reviewer Ease test.


Pass Brand Repeats

Brand Repeaters

We didn't detect a substantial amount of Brand Repeaters.

Pass Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.

  • 0%
  • Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.