We will see Pacquiao is way faster than Cotto, and look at what his timing did against Mosley. IMO I think Pacquiao won't stop Mosley, but he is way too fast and good on the outside. Mosley will likely try to box him like he did against COllazo and not really use a lot of power, but rely on speed, and Pacquiao as is evident by what he did against Hatton is no Collazo.