I disagree that the Barrera, Morales and Marquez fights are what will determine the bulk of his legacy. These fights as impressive as they were happened when he wasn't the face of the sport as he is today. I think what will define his legacy in most is his current reign as P4P king. Which so far has been nearly flawless but I believe a lot of his and Mayweather's legacy depend on when they face each other & what happens.