Watch Berto and Vitali with their rotator cuff injuries, then watch the fight again, especially rounds 4 and 6.
If you mean that Floyd would'nt be able to literally lift one of his arms, Pacquiao would knock him out. Point blank. At this level of the game, no matter who you are, a handicap like that would be to much to overcome.
Pac****s are so delusional. No Pac did not win at all, no pac did not have a shoulder injury (that was just an excuse), and Yes Pac and his team are sore losers and just as classless in defeat as mayweather is in person. I mean people look at Pac like hes a super saint but didnt give Mayweather props