Who wins? I'd have make G-man a pretty sizable favorite. If nothing else, based on the second round of Taylor-Pav 1, and the fact that Pavlik never met a right hand he didnt eat (nor a Pabst he didnt drink). McClellan in 5 in a shoot out.
I hate McClellan's guts, so any MM that involves him winning makes my stomach turn. But, I think he's the favorite here.