He wouldn't have been able to be that active against Mayweather who uses a lot more footwork than any of those guys. Also the punch that set everything else up for Whitaker was the right jab and Mayweather keeps his hands up against southpaws so that would never get through. Now people will say look how Zab landed his left, but that was more because of that split second his speed got him in there that WHitaker wouldn't have been able to get there with. Mayweather throws a lot more leather when he fights against a southpaw.

I think its a close fight where WHitaker would out throw Mayweather, but noway would he outland him.