First of all i would like to say that Joe Frazier is an underrated heavyweight boxing champion, he got blasted away by George Foreman twice and this really is the only time he was convincingly beaten.
He fought Ali 3 times for 1 win and two close losses, the thriller in manilla could easily have seen Ali quit at the same time. Both guys were completely done at the fights end.
IMO Frazier would catch Evander with that famous left hook mid fight, Frazier would get inside of Holyfield something Tyson did not know how to do, Tyson was all power and he only ever had one fight strategy and that was to blast away and if he connected then well and good. Holyfield was always going to be a problem for Tyson. Smokin' Joe on the other hand was a wiley customer, bobbing and weaving, hard to hit and he would get on the inside and come up with that left hook that was one of the most devastating in boxing. Sure, you could catch Joe coming in, but would Evander have the power to stop him? I don't think so.