Yeah, sorry the response took so long.
BJJ is alot of legs, alot of chokes and working the ground for leverage. As demonstrated by Royce Gracie, it is very much a small-man's martial art. What you learn first depends on the teacher, I spent alot of time practicing how to work a guard into a choke or an armbar. BJJ is really good if you're a smaller guy with a Napoleon complex (which I am).
JJJ is alot more spiritual for me, but I also practice Aikido, so I get alot of that. I practice alot of standing pins in JJJ, just because they don't happen as much in BJJ. JJJ is alot more upper body and fits nicely with Judo and Roman-Greco. It also incorporates joint locks and using them in takedowns.
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