You guys are forgetting alot of things... first he is very a 16oz. glove which IMO would absorb alot of the blow... second he never be in the optimum position to hit as hard as in a test where he could plant his feet and drive off his legs as effeciently as possible. THere are factors like a proffessional boxer especially at the top levels don't keep their one place when they get hit, they roll with the punches which takes off at least half the damage. Last but not least most of MIke Tyson's haymakers if not all where with him leaving the ground because he was so short... and HE still knocked people! He in my books hit harder than anyone else... Foreman would have his feet planted and pound away at opponents in the corner to take them out. Young Tua IMo would be the closest person to punching like Tyson.