Master you forget Tunney almost finished Dempsey if it was more then 10 rounds he be out cold. Also forget that Tunney only fought once before the rematch with Dempsey was ending his career as well. I believe Tunney with his boxing skills and movement would of beat any fighter from 1910's to 1940s. He was way above his time form what i have seen of him his boxing skills were way ahead of the curve. I mean i didn't see anyone that could box and move like him from that early of a time period to be honest with you.