Mayweather is winning games not because he is knocking his opponent but because he is scoring and running in the entire game, that's his technique
and he is fast and quick, hard to beat and I guess only Manny has the capability to do it and I believe in the 2nd match we can possibly see that.
In my opinion, he hasn't used any PED's though, you have seen that his body is just average and not that bulky. Funny thing is that last night I just watch their first match and indeed Manny can hit Mayweather even though Floyd has a good defense.
That's why I really wanted to see the rematch and see if Manny can touch Mayweather again because it seems that Manny has regained his second wind even at age 40.
Lol. Floyd's technique is so effective that he's now being accused of using peds. If you watch basically all his fights, the is a superior technical fighter. He uses his wits more than his opponents and has a very efficient, technical style that will bore you. Not very fun to watch for a regular boxing fan but you have to appreciate the efficiency. I don't the result would be any different if in case this fight pushes through.
It's not an accusations, if you have read the topic a few post above, people are "speculating" as to what his reasons for avoiding a second fight with Manny Pacquaio if the money in the table is going to be big.
The results could be the same, but if you like to see Manny Pacquiao in action again, specially if he has few fights left in his tank, then definitely win or lose against Floyd, will be a good fight for him.