In my experience at libraries and on college networks, that tracks.
A student who has excess bandwidth after acing a test is more likely to want to poke and explore the limitations of that system than a student who, at capacity, is almost perfect.
Unscientific, but I'd bet there are two major cheating populations: 95%+, and something like 50-75%. By definition there are a lot more of the mid-tier-barely-getting-by cheaters, but they also aren't as smart and are only dangerous to societal trust in aggregate.
Come to think of it, I missed the third major population: pre-meds
I only brought up the scores to indicate that I didn't need to cheat. I don't think GRE scores are a valid metric of competency or anything worth bragging about. I'm sorry it was taken in another way
Anyway, this isn’t true in my experience. 167/170 in math got me 94th percentile. Far from a perfect score.