You can look at the rank distribution of every competitive game and this concept becomes obvious.

I've played Dota for many years. Managed to reach the Divine rank last year which at the time iirc started at the 95th percentile (maybe 98th?).

Any player who has played Dota for some time knows that while Divine players are good for average player standards, compared to any semi-pro or top 1000 player (not even pro) they are god-awful. To the point where they basically cannot compete in any aspect of the game.