I hear you BIG H, Tyson did fight the best there was but the trouble is, the heavyweight division was, and has been pi$$ weak for a loooong time and he never fought anyone even remotely dangerous compared to the likes of Ali, Frazier, a young Foreman, Norton, a young Holmes, Ron lyle, Ernie Shavers, Jimmy Ellis, Henry cooper, and the list goes on.
We'll never know how good Tyson was or could have been but i very much doubt he would have been much in the 60's or 70's.
Good little guys rarely beat good big guys, and they never do it regularly.