The guys that went the distance with the prime Tyson such as Smith or Tucker had excellent chins to go along with their huge size and strength ... Tyson still tagged them enough to win lopsided decisions ... Wlad would collaspe like a house of cards ...
I can't really see either guy standing up to the other's punch very well. Trinidad was faster and more accurate, he was the more skilled puncher, so I'll say he gets to Cuevas first, somewhere inside of 5 rounds.
^ dont you remember how cuevas used to break apart opponents? He was more feared than Duran and the only man to break apart the speedbag at Gleason's in the 70s along with George Foreman