Freddie Roach said Wladimir Klitschko hits harder than Tyson.

Check this out: http://www.doghouseboxing.com/DHB/Pino081704.htm GP: You have worked with a lot of world class fighters. Is Tyson the hardest puncher you have ever seen or should I say felt? FR: Punch for punch actually Mike is more explosive than Wladimir Klitschko. Klitschko is so big and he doesn’t have the speed of Mike, but he’s got that dense power though so Mike’s asset is the speed that comes with the power. Klitschko doesn’t have that speed so if you see a punch coming and you can prepare for it, it won’t knock you out. Punch for punch I think Klitschko probably hits a little bit harder but Mike’s much more explosive.