Whatever you think would happen in a fight between the two is irrelevant in this. Wlad's resume is clearly superior to Tyson and he should be ranked higher all time.
I'm not a tyson hater I just think it's quite fair to say that like the way people point out Vitali's resume is weak. H2H Vitali and Tyson are top 5 in my opinion but not top 5 resume wise. Maybe even Lewis too? He was champ for a long time but I think like Vitali he never really beat anyone notable. Well he did beat Vitali but that's a whole controversy/debate and I'd rather not get into that.
-He won the Vitali fight fair and square -He has two wins over Holyfield ATG (past prime) -I cannot see how any case can be made for Vitali being h2h top 5. What is your opinion based on?