Some champs in URF too too op?

I know the whole point of URF is for everyone to spam and be crazy, I get that.

I feel like some champions though are...too too op. Like so easy to get kills on to the point where they are single-handedly winning the game for their team. Like, 1v5'ing the whole team, you are dead in 2 seconds.

I feel like when it is like that, it really isn't fun anymore.