No body can take a punch like that and have there jaw move that much and not go down. It's got nowt to do with wether he can take a punch or not and to say things like that means people know F all about boxing/fighting. Dont know if anybody seen UFC 88 last night, but Chuck Liddel got knocked the F&%$ out by Rashad Evans. Now Liddel can take a punch and is one of the best fighters of all time in MMA but it was placed right and he hit the floor, end of, good night.
Yes, some boxers have a 'better chin' and CAN take more punches but the one in question was a beauty. As long as it's placed right your hitting the canvas.