What are you talking about, man? Dempsey and Marciano had completely different styles aside from them both being heavy-punching pressure fighters. Do you even know anything about Dempsey?
I think tunney was the best heavy at staying away,he would prob. cut the easy to cut rock to get a late tko or dec.But the rock is in my top 5 and tunney aint,im kida mixed kus the rock could cut the ring off farly good and could ko a guy with one shot if tunney screws up the rock would end it just as a prime dempsey would have.The rock had one of if not the best rights of alltime but dempsey was a two handed power hitter-the real matchup would be a (prime) dempsey vs rock.also tunneys power is always underrated he had good but not awsome power