In fairness, most people at these forums would probably fancy Mayweather's chances. After a Hatton victory, anything is possibly for future Top 10 p4p legend, Floyd "Money" Mayweather. :rofl
Everyone in the top 10, and even 20 of decent ATG lists has a defining win against an ATG. Mayweather has a great resume, but has not quite got that. I agree he has achieved a helluva lot, but he has many haters and people will, and can pick holes in his resume. He cant beat a prime ATG like Duran, Hearns or Leonard, because there arent any. But beating MW champ would even that out.