Samuel Peter.
His chin is made of Iron, He's one of the hardest punchers I've ever seen if not the hardest, and his will is inpenetrable.
you need to understand that he went the full 12 rounds with an absolute monster with accuracy in Wladimir Klitschko. He absorbed a tremendous amount of punishment, that hardly any heavyweights could withstand. None actually....except Peter.
he also has zero boxing skill. he looks like a fucking retarded amateur. the only reason that everyone he fights doesnt just tee off is because of that punch. but if that punch is so mighty how did lamon brewster and corrie sanders take out klitschko and peter couldnt? down, yeah, but not out.
plus, as tough as he is, everyone has a limit for punishment. he can keep getting popped all night, but it will add up eventually. look at a guy like frazier who took 2 or 3 to land one, it really fucked him up over time. plus he could box, he just chose to use that style. he didnt get his head popped all night because he was a terrible fucking boxer, like peter is.
yeah, heavyweights have to have a punch, but its like saying a car has to have wheels. heavyweights have a punch, pretty much all the time. dont let a loser like chris byrd fool you, any heavyweight worth his jock will have a punch. but the name of the game is boxing, not punching, in the end. theres been plenty of big punchers through history that didnt become champs, and its because they werent good enough boxers. YOU CANT KNOCK THEM ALL OUT, no one ever has.
the first guy who is a decent boxer withstood the storm and boxed him to pieces over the course of the fight. take a look at peters record, a bunch of fucking nobodys! the second best fighter on his record is taurus sykes!
brock has enough pop, hes got heart, a good chin, and pretty fucking good boxing skills, considering the overall heavyweight skill level right now. he doesnt have too great of a resume either, though, cliff etienne doesnt count and mccline looked unusually shitty in their fight. tom yankello is a great trainer and has gotten a lot out of not much. hes about as good as he'll ever get, and thats not good enough. still, hes light years beyond peter.
neither of these guys would has a chance in hell only a few years ago, and forget about it before that, but with schmucks like valuev and liakhovich holding belts, they may become "champions" after all.