In light of a thread in NSB about Mayweather having never beaten a great fighter I thought this would be a better way to judge Mayweather by comparing his best wins versus Pacquiao's best wins because I think most would agree that they are the two best fighters of the past decade or so. Thus these seem to me to be the top 20 wins between them in the order of quality taking into account the quality of the opponent at the time of the fight and the manner of the victory. I only included official victories and left the Canelo fight off because I think we need a good couple of years or so to judge that win properly.
How badly off is my ranking?
Mayweather
Pacquiao
Top 20
Barrera I
Marquez
Cotto
Morales II
Corrales
Castillo II
De La Hoya
Marquez III
Marquez II
Margarito
Cotto
Hatton
Hatton
Castillo I
Mosley
Hernandez
Sasakul
Barrera II
Morales III
Ledwaba