> RPSAI competitions tend to have 100% random players perform quite poorly Not as much "quite poorly" but more specifically, they will provably land at exactly

> RPSAI competitions tend to have 100% random players perform quite poorly Not as much "quite poorly" but more specifically, they will provably land at exactly the median position in the ranking (let's assume there's only one pure random bot in the tournament, no reason to have more than one, but the argument also works with multiple). While it's impossible to win more than 50% of the time from a pure random RPS bot, it's also impossible to lose more than 50% of the time. So all the other AIs will on average score exactly 50% against the random RPS bot. Whether they end up in the final ranking above or below this median line depends on how well they do against each other.