This is really the issue
These organizations have rules, the advantage depends on what rules are being applied
But in the real world, ain't nothin' fair about a fight
If one has to clench the other guy's testicles between his teeth, that's what they gotta do in a real fight.
But for the sake of this thread, boxers spend a lot of training time on footwork, and it does not take absolutely great footwork to avoid a "shooting" or "lunging" take down. It only takes 5 lbs of pressure to knock anybody out