I mean it's not like it's that significant either. The better man will win always so this is irrelevant.
One of the things we ought to commend Mayweather for is that he don't give a **** if the other guy comes in outweighing him by fifteen pounds, Manny too of course, imagine if their opponents weren't allowed to use their size to muscle them around with. Actually I read he wanted one for Canelo so he gave a **** about cinammon yet still fought him when he was the size of a middleweight.