Pacquaio is beatable but you can only beat him if you go toe to toe with him. That makes it exciting. Morales may have won against pacquaio before using some skills but that strategy won't work anymore against pacman. I believe that was the plan of Barrera. To fight Pacquaio outside. That's why he decided to run around during the last 2-3 rounds. Barrera can't simply defeat a Pacquaio who has defense and who is so fast. Technical skills won't win against Pacquaio anymore.

Pacquaio really is a fast learner. Second reason why he is so exciting. You don't know what he will bring to the table.