I'd rather watch Pac vs Cotto rather than Pac vs Mosley, so yes, i think this would be a great match, i'd still favor Cotto to win by late TKO.
Bob arum should STFU until after Pac Vs Hatton to make calls like this... (Because a loss for Pac would defo kill any shot of this happening) Then again, He is the promoter.. Maybe he know's the outcome already? :think
I think Cotto's power would stop Pac getting close enough to hurt him. But if Pac did land some big lefts Cotto could be hurt.
Either one if he's quick/lucky enough to land the right punch. Could even KO him if were to quickly move in 4 the kill after hurting him. I doubt it tho.