Manny Pacquiao is an old cheater and doesn't have the pop in his punches anymore. Maidana did good against Mayweather but Mayweather adjusted and took over the fight, and would likely just fight a boring fight in a rematch for an easy win. Those two fights are pointless.

Shawn Porter or Keith Thurman would beat the shit out of Mayweather because Mayweather isn't as sharp or quick as he was and can't run from these guys all night. And these guys have too much EXPLOSIVE power for Money May.

Maidana has power but he's not explosive.

A guy like Thurman will punch someones head off and he hits like a heavyweight.