99.9999% of the human population isn’t anywhere near the size, strength or athleticism of an NFL linebacker. You’re taking the absolute pinnacle of human athleticism (enhanced by the best PEDs available) and saying they’d beat a regular boxer or BJJ guy lol not a huge leap.
But if you’ll read a little closer I’m saying someone needs to be competent in striking (kicks and punches) and grappling. A kickboxer beats a boxer 9/10 because they have more tools and the boxer doesn’t know how to deal with the kicks. The synergy of skills is important.
In real life the guy who is competent at striking and grappling and has experience sparring will beat the regular strong guy 9/10 times. One of the main things that happens is the big guys always get tired. They don’t know how to conserve energy and they’ve never trained to fight so they get tired in 60 seconds.
There are tons of examples of power lifters and roided out dorks getting tapped by much smaller BJJ guys. The idea that someone can bite or scratch their way out of a tight choke from a real BJJ killer is a joke and shows your ignorance. It’s not a realistic path to victory.
I’ve also seen big dudes get destroyed on the feet by smaller guys when they can’t figure out how to take them down. You can’t just run in and grab someone who has good footwork. And people who don’t understand striking defense get rocked very fast. When you’re rocked and seeing stars you ain’t shit, I don’t care how much you can deadlift.