All martial arts that are practical (that is to say, built around frequent sparring rather than just theory) are pretty equal in that they teach you what it’s like to fight with a resisting opponent and feel what it’s like to be struck and keep doing what you’re trying to do despite that. None of them are useful in the sense of showing you what you’ll actually do in a life or death fight. Because like everyone else has been saying, in that situation you hit da bricks and then gouge out eyes and arteries if you’re cornered.

Don’t worry too much about the differences between different martial arts, just get to practicing anything and don’t forget your cardio.

And if you’re in the US, prioritize learning to use a rifle or shotgun for defending home turf over any hand to hand combat. That could be useful in a variety of situations in the coming years.