Play them yourself, and u will find they are not as easy to play as u thought they are.
Wukong is meant to be a bruiser not a glass canon, his damage is high for a bruiser but not enough to 2 shot, even early game, and u will be stupid to get 2 shotted.
Jax, well, his late game is really really good, but his early is just ok or even bad, for ur information, we should nerf all champions in the game cuz they all accel in early/mid/late, so y not nerf them on! (Ur bs talk)
Shaco, hardest champion ever, no, just jk, but he does take quite some skills. His jungle style is different from any other junglers. He relies more on counter jungling and early ganks. By late game, you either build in tanky items to act as a mini bruiser (i do not recommend), or as a AD glass canon which can basically pop non-tanks, and srsly, use your clone.