cause that's ok

there's a difference between someone who comes out of cloak and kills you without any time to respond, and a champion that has to gradually build to a point where he can one shot you. Veigar is allowed to do these things because of his passive, having to focus on farming and stacking throughout most of the game. Wukong on the otherhand had a guaranteed power spike with early items that allowed him to completely destroy any other champions from a very early point of the game.