There’s a huge limiting factor to defensive fighting to self defense:
Terrain and visibility dictate defense, footing and accuracy.
You’re lucky if you have the room to move around like in a ring. Shit gets in the way.
It’s easy to get overwhelmed with punches early unless your game is on point with only a moments notice.
Then there’s lighting. At night people are naturally going to come at you from the side you are well lit by and then you’ve got street lights in your eyes fighting a shadow person you can’t see as well.
Little visual cues that go with telegraphing are harder to see.
One of the reasons I like a small pistol over a bigger one. Quick in tight spaces and fast on the draw in case of ambush. Then again, that’s a fast track to the state penetentiary. Plenty a man has jumped someone in a parking lot and pressed charges or claimed self defense even when they outnumbered the victim 3 or more to 1.
Sorry for the derail but power puts people down fast. Makes the fight shorter and you less likely to be hurt. Also, people have a harder time fighting “The Mountain that Rides” for all kinds of reasons. Reach, leverage, sturdier bodies. The disorientation that comes from heavy hands. Smaller guys can hit like a ton of bricks too. I’m not one of them but I knew an old boxing coach that kicked like a Clydesdale. When a shorter guy punches above his weight class, I think he’s automatically at an advantage because smaller guys tend to throw rocks faster and the bigger guy maybe won’t be on his guard as much, because he doesn’t expect to encounter power. (at least at first.)
Some of the Mexican boxers I knew in LA could fight like wild tigers. I got my face bloodied from another 145 lb guy trying to go pro just one time and decided maybe the amateur circuit wasn’t for me. It was sparring, not an officiated match. I liked it but I had a day job and a demanding wife that didn’t book such playground shenanigans as serious trade. One of those would have had to go.
If a guy lacks savage power, he better be a stone cold boxer instead of just another puncher that’s for damn sure.