It happens with every great fighter. The worse a man makes his opponent look, the worse it looks to some fans because they don't wont to give credit to a guy for beating a "bum". That's something that seems to be pretty consistent across all races and nationalities- great fighters taking **** because they make their opposition look just that bad. Mayweather, the Klitschkos, Pac, Calzaghe, RJJ, etc....any fighter who happens to be truly dominant routinely gets punished for making it look too easy.