Its not to harsh on JDS, his style is made for MMA while Tysons would have to undergo some adjustments. Tyson was an animal and would go through a lot of mma fighters on that alone. Tyson was a freak though, like Jon Jones is in his own way - you get these guys sometimes.
Well he was such a dedicated trainer he would have perfected how to sprawl if it meant he could continue knocking out people in MMA. Had he kept his commitment to the cause then he could have been a master of the sport. He probably wouldn't have reached a black belt in BJJ but he'd have learned enough submission defence to dominate