I agree 80s Tyson is the only one with a chance but Ali had a cast iron jaw and I always remember something Colin Hart said during his commentary for the Douglas fight in 1990 - "Mr Ali would have played with him"(or something very similar)

That sums up how the fight would've gone for me. Tyson explosive for 2-3 rounds then out of ideas as he got toyed with.

Stoppage for Ali from around the 8th onwards - or a Tyson DQ