After watching that great video I have to admit Tua could win by KO if he got his big punches in first. I still favor Tyson because he is faster, has a bigger variety of hard punches and a better right. Tua had a great left hook that he doubled up on.
Tyson by KO of course. There is a reason Mike Tyson is a legend and even non boxing fans know all about him while only boxing fans know who Tua is. Tua was a very rugged hard punching boxer who deserves respect. The young prime Tyson was a monster. He was a destruction machine with lightning fast, accurate punches and combinations and shocking power in both hands. Tua had a great chin but even a great chin can be cracked if it is hit often enough and hard enough.
Tyson, he was faster, used a lot of head movement, and created openings behind his jab that was underrated. Threw punches in rapid combinations. Tua gets blasted out of there in mid-late rounds.