When you think of the G-Man and Micheal Watson if you go past the near tragedys that happen to both of them this is a decent match-up. Both G-Man and Watson were just as strong outside the ring as they were in it because they both fought hard to stay alive. Back to the match up and the slick fighter with a good jab Watson overcome the relentless pressure and punching power of the G-Man? Personally I think G-Man wins this fight via tko in 6 rounds in a good fight.
I think he would. Watson had a solid chin, and McClellan was very beatable when you got past R5. He didn't carry his power late, and has only beaten 2 (low level) guys if the fight went past 5. Gerald could win, but it's very hard to stop Watson early even with his punching power.
I think Watson would cover up well when needed and open up with great timing to land often on McClellan and score a late stoppage. Watson late stoppage