Well, I totally understand the fact that it's unable to make it all the way to UFC 205. We all do agree that Miocic is a great figher but his popularity isn't big enough to headline one of the most upcoming event in the history of UFC. Unlike years ago where HW used to stand in the spotlight zone, I'm still remember the time where both Cain vs Dos Santos was what Dana refer as the best they are able to deliver on that time.
Anyway, let's get into business: Who will has the higher chance to walk out as the HW champion?
Just a simple breakdown between these two great fighters:
Striking : Overeem
Chin : Miocic
Octagon control : I would say Overeem
Grappling : Overeem
Cardio : Should be equal
If Overeem stay alert all the time by avoiding all those heavy strike from Miocic while constantly deliver hard punch towards him, he might find himself at the crack of Miocic by either late of R2 or early R3.
Prediction : Overeem by TKO at late R2.