Samsung has been blamed before for fudging the Galaxy S4 and the Galaxy S3 in order to make the phones perform faster than it does naturally in benchmarks. But Anandtech has run the numbers and found that pretty much every smartphone maker is cheating.
Based off of extensive research, Anandtech concludes:
We started piecing this data together back in July, and even had conversations with both silicon vendors and OEMs about getting it to stop. With the exception of Apple and Motorola, literally every single OEM we've worked with ships (or has shipped) at least one device that runs this silly CPU optimization. It's possible that older Motorola devices might've done the same thing, but none of the newer devices we have on hand exhibited the behaviour. It's a systemic problem that seems to have surfaced over the last two years, and one that extends far beyond Samsung.
The CPU optimisation it refers to is what makes devices seem like they're speedier than they are in reality. You can head over to Anandtech to see its thorough results on the state of cheating in Android benchmarks. The main takeaway is that we can't just hold Samsung responsible for shady business without also pointing the finger at LG, Asus, HTC, Motorola, NVIDIA, and frankly, probably others. [Anandtech]