Why does weight of 140/147 matter for Pacquiao/Marquez?

[Gino Ros]

For the Margarito fight, Pacquiao was on a ridiculous diet and an extreme training regimen. Pacquiao barely came in at 144.6lb. Pacquiao can eat comfortable and not wake up in the middle of the night to drink those high calorie shakes vs. marquez. I really don't see the big deal. Both men will weigh around the same come fight night

Stop yourself. Really.

You are being sold a bill of goods on that whole "we can't get weight on Manny" thing.

manny was 148 on fight night for Margarito,
manny was 148 on fight night for Diaz.

Look it up.