I consider Tyson a genetic freak based on his look as a teenager and that he matured at a very young age. It clearly helped him to become youngest ever HW champion. If we compare Tyson's pics and some Mr Olympia winners at young age, well, some of them were not as genetically gifted as Tyson (Larry Scott, Frank Zane, Dickerson, Bannout, Yates and few others didn't look big and muscular till they started training and taking PEDs, in fact they looked skinny). There were also genetic monsters though like Ronnie Coleman and Sergio Oliva.
And it's that genetic gift that enabled him to become champion, one could argue that if he'd had matured like a typical heavyweight he may have never even become world champion when the likes of Holyfield, Lewis and Bowe are in the mix.
Interesting diversion to an otherwise dull topic. (No offense, but it's been done to death.) I don't have any clue how he'd fare as a bodybuilder, but of course Tyson has ridiculous genetics. I'm not sure I've seen a heavyweight with that blend of speed, explosiveness and punching power all rolled into one package before. Technically, short men standing less than 6' tall should not be doing that well in this division. Not in the last 30 years or so anyway. There are stacks (or were) of heavyweights that were monsters, standing 6'4" or more and weighing 230+ pounds. BIG guys, who had talent. A few short guys like Tua and Chagaev made an impact, even Orlin Norris held his own for a bit as did Mathis jr, but realistically short men are up against it against much taller, rangier opponents, unless they have some ultra-rare combination of physical gifts which Tyson was lucky to have. So unless an equally talented short man comes along one day, the days of the sub-6' heavyweight that can establish dominance are done.