I rate them pretty even in a lot ways there resumes are not to far off from one another. I have to tip it some what in Mayweather favor because faced good comp and come out undefeated. Now i am not saying Pac is the same as he was when he lost. I mean his first lose i don't count but his second lost he was title holder and the third loss don't think to far off prime. Also when people bring how Mayweather only fights people on the slide well i mean Dela hoya was done and pac fought him. Hatton just got his ass handed to him by Mayweather and then Pac fought him. Cotto just got smashed by Margarito and then pac ends up fighting him. I just saying it goes both ways, i still think they belong with likes of Leonard, Duran, Ali, and Hearns when you talk about great fighters they both done alot.