MMA Ufc Submission Training

Would Rocky Marciano last in UFC?
I know this sounds like an odd question, but with his signature awkward stiff fighting style and granite chin, would the Rock be a match for a fighter trained in MMA (submissions, wrestling, etc.)? He has endurance and heart with a one punch KO, but would his sluggish movements prove fatal?
With the way Rocky kept on landing punches and moved around the ring, I’d say yes! He was and still is to this day the hardest hitting fighter ever and the best conditioned. In all the fights I’ve ever watched of his I dont think 3 seconds went by in a round when he wasn’t throwing a punch! He was said to have thrown anywhere from 90 to 120 punches in every round he ever fought in! That’s unheard of these days! And to ass to this, Marciano could take any kind of punch and keep coming. Pain wasn’t in his vocabulary!
Frank Shamrock MMA Training