I think Floyd Mayweather Jr basically wins, because of what JMM done to Manny Pacquiao twice. I think people are forgetting these fights, and remember the 2nd fight was the improved Manny Pacquiao, JMM still managed to counter punch effectively. And offset Manny Pacquiao's rhythm with movement.

Even Erik Morales done this effectively, although he was far more aggressive. And i know people are going to say well that wasn't a prime Manny Pacquiao, which is true. But it wasn't a prime Erik Morales either, especially in the last 2 fights, after he was humilated by Zahir Raheem.

I think even Miguel Cotto had success when he boxed, the fact is the way to beat Manny Pacquiao is making him come to you. Manny Pacquiao's last 4 opponents have all been coming straight at him, trying to exchange punches with a guy who is x2 as fast, which isn't a good idea.

Even look at the 2nd MAB fight, i thought MAB was doing well with his defensive fighting and moving around the ring. But he was too cautious and too past his prime to really fight effectively.

But i think MAB showed the gameplan, and so did JMM. And also obviously Erik Morales, but obviously Floyd Mayweather won't fight as agressively as Erik Morales. Even Oscar Larios who moved up two weight classes to fight Manny Pacquiao, went 12 rounds using movement. And even had some success badly stunning Manny Pacquiao in the 3rd round.

But despite all that i just think Floyd Mayweather Jr, can do pretty much everything better than JMM, plus he won't get hit as much because his defense is far superior Floyd Mauweather Jr by UD.