Williams avenged that loss in BRUTAL fashion:hi: Pac can't whoop anybody that hasn't been KO'd already:deal
It's also possible that he still has many of the same flaws. And it's also possible that Pacquiao is 100 times the fighter Quintana was.
Pac is too small and overrated to do that. He can't fight on the inside worth a **** and doesn't move his head.
It's also possible that Pac is a foot shorter than Williams and arms are 6 inchers shorter. If Pac, or anyone on his team believed they could beat Paul Williams they would of fought him already.