The two hardest punchers to being world heavyweight champion of the last 20-30 years if not ever. Who punched harder? Ever opponent they both faced Lewis knocked out, except Holyfield, but he did hurt Holyfield worse than Tyson did. Tyson knocked out Bruno quicker. Lewis knocked out Biggs, Ruddock, and Golota quicker... So who was the bigger puncher? IMO its probably Mike Tyson, but he could hit the biggers guys as easily as Lennox could, though Lennox did hurt Ruddock with a clean cross yet Mike hit him with numerous hooks to no avail.