Riot considered nerfing Shaco because he is "too much of a pubstomp champion" but.....
"We're talking about Shaco. Risk there is he's pretty strong already at most skill levels already, so we'd already been considering a nerf on pub stomp grounds. Nothing conclusive yet, but less sure we should add power to him as a result, even if Duskblade gets nerfed." -Meddler
being good in every game, against every jungler, in every elo is perfectly ok. Warwick has a 55% winrate as high as Masters elo and completely dominates and pubstomps Bronze through Diamond V. Shaco has less than 1/3 of the playrate that Warwick has, and is without a doubt harder to play to. The difference is Shaco can actually be counter jungled and falls off a cliff past his early game cheese while Warwick is still the strongest mid game jungler in the entire game.
exists , as a champion he's in very bad state.
.(See Pink Ward)
and
can 1v1 him most of the time