rehydrating only 3 pounds isn't small? If a 130 pound fighter rehydrated to 133 the day of the fight, I'd say he was small also
What? On sheer weight alone Mayweather and Pac are equal... If anything, for Mayweather being "bigger" he is quite light.
He was enormous at 130 and 135, but at 147 and at his age, he's certainly not being lazy. He's still about average height for a welter, and well above average reach.