Completely missed the point, Drago isn't use to leg kicks, Drago takes a leg kick his punching accuracy is going to be off if he tries to throw a punch during or right after, Boyka could very well break his leg via leg kicks and it has happened before.
So you think Drago will survive a full mount being punched over and over considering he won't know how to escape? Or are you assuming Boyka won't just submit him? Or assuming Drago is all of the sudden a BJJ black-belt practitioner? He wasn't taking punches for the full 15 rounds, he was dominating him in the earlier rounds then it turned into a roller coaster. Besides if you ever tried mma which I can tell you obviously haven't, you would know that it takes a lot more out of you than boxing does, 1 round in mma may be the equivalent of at least 3-4 in boxing depending on the opponent.
I know Drago definately should punch harder but to say WAAAAAAAAAA4AA444Y stronger is over doing it. Boyka is causing heavy damage off of some BS acrobatic movie moves that usually wouldn't even hurt. Not all of the moves are typically painless just a few and one particular I know doesn't hurt or work well, yet it can send someone tumbling on undisputed.
It's not like its the Superman vs Spiderman in H2H only.