Look at this guy in comparison to a modern heavyweight, Joseph Parker, who is fairly small among the heavyweights of today. Joseph Parker is only about 6'3 or 6'4 and he makes tyson look like a kid. Tyson at his size was knocking out heavyweights easily. That gets overlooked when discussing his career.
https://scontent-dft4-3.cdninstagram.com/t51.2885-15/e35/14733557_316802268700743_6284656267906514944_n.jpg