Whatever you do, don't by in to the "it's not the style that matters, it's the practitioner" mentality too much. It does have a little bit of truth,
Actually, it has a lot of truth, though not entirely in the way that most people are thinking when they make the statement. Most people say this with an eye towards training hard, and certainly, if I'm training hard, I have a better chance in a violent encounter than I do if I train haphazardly.
However, outside of training, the practitiioner does matter. An 135 pound 85 year old man practicing MMA will likely be at a distinct disadvantage against a twenty five year old TKD heavyweight tournament fighter. An absurd comparison, I know, but the twenty five year old heavyweight TKDist will have the advantage because he's twenty five and his opponent is eighty five.
They have weight classes in MMA, boxing, wrestling, TKD, etc. for a reason; size does matter. They separate competitors by age and gender because like it or not, it does matter (though regarding gender, to a greater or lesser degree, depending on the art).
A friend loaned me a book a while back about a diminutive female vampire hunter. The books were so-so, but one line stuck in my head. The main character said, "I've trained hard in several martial arts and I'm more than a match for
any badbuy my size. Unfortunately, there aren't many bad guys my size."
Andre the Giant would have been a tough opponent for anyone no matter what he trained in. Because he was a frickin' giant.
but some styles ARE better than others. This is a fact.
Every style is better than every other for something and for some people. Figure out what you want to do and what is best for you.
If you learn a presentation/demonstration art, whatever it may be, be realistic about what it is designed to do. XMA is 'better' for flashy demonstrations and presentations than jujutsu.
If you take a fitness oriented tai chi class for health and wellness, chances are that it is better for health and wellness than sport karate, particlarly if you are starting the art as an over fifty years of age student.
Taekwondo is better for learning high kicks than boxing. Aikido is better for joint manipulation and grapples than taekwondo. BJJ is better for groundfighting than aikido.
Everything has its strong suit. Not everyone takes to every art equally well either. That is why some people are utterly frustrated in one style and in Heaven in another.
If you are in the wrong art for
you, then regardless of its statistical superiority, it is not better than one that is the right art for
you.
Daniel