At the end of the day, you need a guy who can get a shot and make it. Athleticism won't help if you can't shoot, or if your game is too one-dimensional.
It wasn't until Lebron could knock down jumpers that he started winning at the highest level. Even he could be kept off the rim with a double team.
Kobe's game is all about jumpers. His ability to drive is what buys him space to get them off. Jordan became the same later in his career.
That said, Wiggins maybe a guy that no one can compete with physically.