First off, the guy in the video is not only bigger and stronger but also more skilled than the 2 guys he knocked out. He's not terribly skilled but he knew his right hand would end the fight and he threw it repeatedly and used his left to keep the 'bouncets' at bay. Solid fight plan for the big guy. Those bouncers were completely intimidated after the head butt. And fought timid. My guess is they're used to manhandling runts and really don't fight much and big dude jas probably been in alot of fights and wasn't at all intimidated.
I knew a guy who fought ALL THE FUCKINGTIME. White dude who lived in the hood (Delray for Abe and Dave) anyway Delray was a fairlymixed area backthen mostly hispanic but alot of white and black too. This guy was pretty big but muscular, not a slob at all. I neversaw him lose a fight. I never even heard of him losing a fight. I used to ask him how he got so good at it. He said the more he had to fight the better he got and as he got older, and bigger, he found that the most important thing is to land first. He said if someone is talking shit and its escalating, don't waste your breath talking shit back n forth, just pick a spot right on the guys chin while he'stalking shit, then when it's time hit him first, right on that spot as best you can.
I said "like a sucker punch?" He just laughed his ass off and said "Whatever! Bitches shouldn'tbe talking shit. When they wake up they know where to find me.".