People talking about Pacquiao not putting as much pressure on as he normally does or should have done, I'm pretty sure frustration would get the better of anyone when you're throwing flurries at a guy who isn't there. Of course he's going to try to conserve energy if he's not catching cleanly, and try to be more precise, as soon as he was forced to slow down, game over.
Mayweather is the perfect boxer, he's got everything. He hits cleanly, he doesn't get hit, he's quick on his feet, his hands are fast, he's powerful, he can take a punch. Invincible.
Bring on Amir Khan for the lols.