That is the reason why Floyd is undefeated, and I agree with that.
As a supporter of Pacquiao and his fights, the first time Manny fought Floyd, I thought he is just someone who doesn't want to engage in a slugfest, as you've said it, and just punch and run around. But while the years passed, I realize he is just a smart boxer taking advantage of that reach and the fact that himself, being challenged. But the thing here is that I don't think Pacquiao wants a rematch if he has no plan or no strategies at all about that kind of fighting style, right?
Mayweather is all about money and if he wants a rematch that's all its about (money), the entertainment is gone and that's what's boring on every match of Mayweather.
If Pacquiao surely wants a rematch a good strategy to break that defensive style of Floyd is totally a must and a knockout as well. I'll always bet for Pacquiao not as just my countrymen but as the love of this man on this sport.