Interesting to think how you would go about defeating this.
Even though you could modify an engine to evaluate each of it's moves against the selected "top engine" move to avoid them, there is no clear route to success since there's going to be a lot of overlap between human and computer for more obvious moves... So you'd need some kind of tunable difficulty threshold above which it avoids the best solution.
Even then, your difficulty setting is a gamble on whether your opponent will call your bluff.
In the opposite case, because of the same overlap, false positives are going to be a combination of frustrating and flattering.
I find this is the case in most of the online FPS I have played, the knowledge that cheating is possible combined with the disbelief of the ceiling on human ability makes a huge number of people think you are cheating even if your ability is merely above average. There are also confusing overlaps between cheating behaviour and pros on FPS when trying to evaluate replays e.g wallhackers (especially pro wallhackers) and pros sometimes look very similar, because the pros are attempting to track through the walls in their mind... if they get lucky, a replay makes them look super suspicious and hard to distinguish in a single case. There are going to be a ton of games like this where the cheating behaviour are close or identical to the top pros.