Not all of those opponents are what I would call Superheavy though Vendettos.

Some of the more conventional sized boxers are certainly more skilled but Fury is comparably capable as they are still because of his size.

Your comment about Wilder, sure Wilder is powerful but not only is Fury more skilfull he is also much bigger. Wilder is a skinny beanpole who without roids would resemble something like a Ernie Terrell type body.

I think if Fury survived 3 rounds with Wilder, he would go on to win the fight!!