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C4 Original
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Last Updated: Jul 19, 2017
Note: While Bodybuilding.com claims 4,810 Ratings, we counted 4,173 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Fail Overall Grade
FAIL Deleted Reviews
FAIL Rating Trend
FAIL Brand Repeats
FAIL Suspicious Reviewers
WARN Unverified Purchases
WARN Reviewer Participation
PASS Word Count Comparison
PASS Phrase Repetition
PASS Overlapping Review History
PASS Reviewer Ease
PASS Sample Reviews
Most Trusted Reviews
Nothing too crazy, I've had better. [Go to full review]
May 5, 2016
100%
TRUST
TRUST
- Verified Purchaser
- Overlapping Review History: reviewed 4 of 9 top products
- Critical Reviewer (avg. rating: 7.7)
Least Trusted Reviews
C4 works great when your first dart taking it. After ... [Go to full review]
Jul 31, 2013
0%
TRUST
TRUST
- Unverified Purchaser
- Created on a high volume day
- One-Hit Wonder
- Never-Verified Reviewer
- Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
- Overrepresented Participation (posted 1 Review)
- Critical Reviewer (avg. rating: 7.0)
Analysis Details
Fail Deleted Reviews
We discovered a total of 282 deleted Reviews for this product, with an average rating of 8.3. 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:
- 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.
- We have no information on reviews that were never published in the first place.
- 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.
Fail Rating Trend
-
- 3%
- Created over 11 days
We counted 4,173 reviews for this product over the span of 2,364 days, an average of 1.8 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 8 or fewer reviews on any given day.
However, we see the following 11 days exceeding this threshold:In total, we found that 141 reviews were created on just 11 days. The reviews on these high volume days have rated this product an average of 9.1 while reviews from other days have rated this product an average of 8.5. 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.
Fail Brand Repeats
Brand Loyalists
425 of the 4,173 reviewers have reviewed multiple products but half or more of their reviews are for this brand. This is an excessively large percentage of Brand Loyalists which may indicate unnatural reviews.
Brand Monogamists
209 of the 4,173 reviewers have reviewed multiple products, but only for this brand. This is an excessively large percentage of Brand Monogamists which may indicate unnatural reviews.
Fail Suspicious Reviewers
One-Hit Wonders
1,498 of the 4,173 reviewers have only reviewed this product. This is an excessively large percentage of One-Hit Wonders which may indicate unnatural reviews.
Never-Verified Reviewers
2,017 of the 4,173 reviewers have never written a verified purchase review. While this is more Never-Verified Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Take-Back Reviewers
752 of the 4,173 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.
Single-Day Reviewers
832 of the 4,173 reviewers have written multiple reviews but posted all of them on a single day. While this is more Single-Day Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Warn Unverified Purchases
2,741 of the 4,173 total reviews for this product are unverified purchases. While this is a higher percentage of unverified purchases than we'd expect to see, it does not appear to have a significant impact on the overall rating.
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.
Warn Reviewer Participation
-
- 80%
- From reviewers with an overrepresented participation
We see the following 1 participation group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 3326 reviewers (or 80%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Word Count Comparison
-
- 0%
- Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.
Read more about our Word Count Comparison 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:
128 reviews
8 of the 4,173 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.
Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
14% also reviewed:
Gold Standard 100% Whey by Optimum Nutrition
7% also reviewed:
N.O.-Xplode by BSN
6% also reviewed:
Combat Powder by MusclePharm
4% also reviewed:
Phase8 by MuscleTech
4% also reviewed:
Essential AmiN.O. Energy by Optimum Nutrition
4% also reviewed:
Gold Standard 100% Casein by Optimum Nutrition
3% also reviewed:
Opti-Men by Optimum Nutrition
1,329 of the 4,173 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.
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 8.6, while the average ease score for reviewers in this category is 8.8.
8.6 Product's Average Ease Score
8.8 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Sample Reviews
160 of the 4,173 total reviews for this product mentioned the word "sample" within their review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.