I think 2 different topics are getting confused here.
1. The validity of benchmarks.
2. Samsung intentionally skewing the results.
I am of the camp that benchmarks do very little to show how a phone will perform in real life conditions. The only way to know if a phone is "fast" enough for YOU is to use the phone under YOUR normal usage patterns. You have 14 days to test drive the phone. Use them.
It does appear that Samsung went out of their way to make sure that the S4 performed very well under certain conditions.
Brian Klug is extremely knowledgeable about the hardware used in all of the most popular smartphones on the market. It is highly unlikely that he is reporting these findings with malice. There are very few people writing on mainstream (if anandtech is considered mainstream) tech sites that possess his level of knowledge on matters related to the latest processors. To claim he is biased is pretty silly.
Bottom line, Samsung knows that several of the most read review sites post benchmark comparisons with their reviews. Samsung also know that the majority of people base their opinion of a product based on 3 sources. Online review websites, friends and family, and customer reviews left on retail sites. They played the system to help their phone look better. Read a lot of the initial reviews for the S4, a large amount of them stated that the S4 was laggy and stuttered, but the benchmarks said it was lightning quick. Seems to be a little disconnect between the 2.
I am not sure if I think Samsung is "bad" for doing this. They are doing what is best for their product. Seems like a smart thing to do. As long as people continue to think benchmarks mean a damn thing, I expect manufacturers to do their best to make sure that their products look good when they are benchmarked.
Just my 2¢
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