Caitlyn - 7/5/7 KDA with like 30% winrate in 20 games, wins lanes all day cant win you games.
Fizz - Too much games with stats like 29/11/13, 35/8/17, 37/15/7 and then you still lose.
Singed - I am winning lanes, split pushing, in ranked I almost never won a games with him because its like im 1v5ing without doing anything.