I think that a lot has to do with the fact that Mayweather simply put has not fought enough big names. And as skilled and talented as JR is he lacks a certain killer instinct that fighters like Oscar and Tyson had. I remember watching fighters like Oscar and Tyson when I was young and the rush that I got when that bell rang was undiscribable. Knowing that the fight could end at any second kept my eyes glued to the screen, jumping with exitement with every combination thrown. As much as I like watching Mayweather fight he does not give me that rush, that exitement that Oscar and Mike used to give me. Some fighters are born with a killer instinct, a certain type of character and carrisma to complement their skills. Unfortunatley for Mayweather he only has the skills.