I think Miocic needs to be looked at in a different category now.
When you talk the legends of MMA heavyweights, you have to mention guys like Bas Rutten, Mark Kerr, Fedor, Randy Couture, Mark Coleman, and D Sev. Im probably forgetting a few guys but Stipe has to be mentioned among them now. Most defenses of title, all of them against destroyers. A guy like Ngannou would of blown away a Randy Couture, and Miocic would probably beat the Coutures of the world and is probably one of the greatest MMA heavyweights ever.
Its hard to believe but you cant deny this guy anymore. His chin is ridiculous, he doesnt really get tired, which is astonishing for a heavy. His punching power and technique are obviously world class, so when you combine chin, heart, stamina, and power, you get Stipe Miocic. Who can beat him? Surely not DC.