This one would go down to the wire. I feel Hector gives Shane all he can handle with his speed, whereas Mosley has the punch and fast hands to get Camacho's attention. Throw this all in the air, and the result IMO is SD Mosley.
I think a prime Camacho would have some success boxing Shane the first few rounds. But then Mosley would hit him with big shots, pound his body some, and Hector would probably run for the duration of the fight. Mosley by decision.