The trouble with Frank was that he wasn't fast or accurate enough to land anything decisive after the initial stunning blow.
Tyson was off balance against Bruno, Bruno was no where close of putting Tyson down in my opinion. Tyson was hurt far more against Bonecrusher in their 12th round when Tyson backed up, or when he was staggered by Tucker in their first round.
That was Franks Big problem, Self confidence. He had none, believe it or not, I spent enough time with Him, to see it.