Both say it's very important to them. Pacquiao likes to fight at a very fast, high intensity pace and Mayweather likes to fight at a more methodical, slightly slower pace. I think pace will be a huge determining factor. Whoever dictates the pace will be ring general and will win, probably. With that said, who will enforce the pace and how?
I see Pacquiao walking into the ring with absolute rage. He probably has every intention of physically hurting Mayweather. And will press the action.