Marquez lost speed at 147. At 130 Marquez was matchign Pacquiao with speed for the most part. 147 is wrong for him. At 135 Marquez would win, anything over and I would pick Pacquiao.
Would be a close fight like their previous ones.
JMM just looked a little slower, but still had the same skills and abilities that gave him such success against Pacquiao.
Mayweather was just too big and too good.
It would have been more competitive since Manny would be aggressive and take more risks than Floyd did, but Marquez simply looked poor at the weight. I'm pretty sure Manny would have won via a mid-late round ko or pretty wide UD