None of these fighters have fought anybody with a pulse yet. So to say this guy or that guy could punch hard is exaggerating. Having a lot of knockouts against tomato cans don't equate to much.
Joe Joyce is 6'6 not 6'4. And he is a 260 pound behemoth of physicality. Dubois is not 6'6 he is 6'4.5. I'd like to see these two fight as I think they offer the most out of that list. I just can't get behind Hrgovic hype, but who knows. Nathan has some ability but he will never amount to anything special.
Actually Joyce has fought good competition that has been fought by other top contenders today... so it says a lot about where he is at. Dubois dispatched Kevin a veteran boxer... in with likes of many previous champions and contenders... and Ian Lewison who fought Whyte... and Lenroy Thomas who fought Dave Allen.