What I prefer in Tyson was his ability to put fear in his opponent's head. I'm pretty sure that nobody have ever been more feared than Tyson in the history of boxing.

Also, he was small, really small for a heavyweight. But him and d'Amato was able to change this weakness into one of his biggest strenght with the peek-a-boo style and his awesome step-in.

And I agree that d'Amato's dead was the beginning of his downfall. It's a pity we couldn't see more of him.