Heavy is different historically there are only 3-4 good top fighters there..........Optimally you would want to see a fighter tested against real comp before he starts sniffing around a title shot.
If you want to shyt on Wilders opponents, than you can do the same with Tyson, Holmes, Foreman(2nd career mainly) and such
His competition is not a reason to slight him, when the truth is somewhere in the middle, from what we seen so far I see only 2-3 fighters possibly beating him, and secondly how do we know if people are kicking down doors to get to Wilder, one of the top heavies in Arreloo already ducked him, what more do we want