I kind like Billy Conn in this one. Very fast and elusive fighter who was never stopped in a pro ring.
Depends how much the ref is willing to let Carnera get away with really, under strict rules he probably gets boxed circles around by Conn to a lop-sided decision but if he's allowed to stomp on his opponent's feet and manhandle him then Conn gets Loughran'd
The win over Loughran is the only thing that makes me skeptical. It's probably not completely one sided but Conn should win the decision.