For sure, he's a very big dude & he has the power & explosiveness to knock anybody out even heavyweights. DC actually impressed me in their bout because of how many of his power shots he was able to absorb, made a wise decision turning it into a grappling match because Rumble was launching bombs.
I realise he's put on even more muscle since his WW days, but I find it amazing someone of his frame size was ever able to make it that low. I read in the run up to the Bader fight people were calling him mentally weak, let me tell you, you are not mentally weak if you are able to cut the amount of weight he must have been cutting to get down to 170.
185 should have probably been his home earlier in his career, I don't think he'd have missed weight anywhere near as often as he did if he'd been at MW. Really boggles the mind to think how good he might have been had he been smarter earlier in his career, because he's just tearing through guys now he's actually more healthy.