I see what you are saying, but there is more to Systema than being able to beat people up. I have honestly never seen ANY sort of training that teaches relaxation to the same extent Systema does. It teaches you skills that show you how to relax physically and mentally regardless of the environment or circumstances. I've seen a 100 martial arts coaches tell people to relax. I've never seen anyone show them how to relax until I studied The System.
You don't always get that from the clips on the Internet though!
"Let your food be your medicine, and your medicine be your food"