Pacquiao won't be the same win or lose going back down to 135-140lbs

We all know the story of what happens when you go up in weight putting on some added muscle and whatnot to makeup for lack of true physicality. After Manny wins or loses against Oscar, having to then shed off all the new muscle and conditioned weight he's putting on will be his downfall when he attempts to drop back down to 135 or 140lbs. He already mentioned they wanna go to 140lbs after this fight and most likely for Hatton. But who knows how the reduction in muscle mass will effect Manny as it has so many others.