Luffy's initial attack wasn't WSG, it was a slow-ass Elephant Gun variant. There's nothing that proves that TOEI Kiz could dodge WSG even if he is aware of it's rebound nature. They also removed Kiz accelerating it with his laser lmao.
This makes TOEI Kiz look worse than his canon counterpart, nevermind Goofy dodging laser spam and the kick-blitz.