Counter-Strike has been doing this for years. It's called "Overwatch" (even before Blizzards Overwatch came out). And believe it or not it failed to reliably catch actual cheaters AND got non-cheaters in trouble (both repeatedly). A very good player is indistinguishable from a cheater with a good cheat. Sometimes people just get super lucky for a few rounds and you might get judged based on that.
> A very good player is indistinguishable from a cheater with a good cheat.
I played COD4 a lot, though not competitively. I used to say that I had a bad day if I didn't get called a cheater once.
I didn't cheat, never have, but some people are just not aware of where the ceiling is.
The cheaters that annoyed us back then were laughably obvious. They'd just hold the button with a machine gun and get headshots after headshots, or something blatant like that.
Overwatch is now non-public - when CS2 replaced CS:GO, it wasn't available, and when it was reintroduced, it was only for "trusted partners" [0].
I was imagining specific things that are impossible, not just things that would be unlikely.
For example, in NBA2k there are a lot of players running around who are like 12 feet tall. The client has to render that, and the client could have a “if another client tells us their player is more than 8 feet tall, it is a cheater”