We seem to have this thread at least once a month.

Was he the hardest puncher?
If you lined up all the great heavyweights in front of a heavy bag, had them throw their hardest punch, and measured the impact.... then no, I don't think Tyson would be the "hardest" puncher. I think fighters like Shavers and Foreman would measure higher.

Now, in an actual fight in the ring, punching is about more than just power, it's about speed, accuracy, and sharpness, as well as pure power. When you factor in all those things, then Tyson in his prime may have been the most dangerous or devestating puncher in the ring, although Foreman would have a legit argument.