Brazillian Jujutsu is still jujutsu. Which means it's based on a Japanese system. Basically all the old jutsu's were specialized and you studies a lot.
That's cool though, because most BJJ'ers realize that. That's why they focus on cross training.

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Although there are many styles, they all depend on the strong beating the weak and the slow falling to the quick. These are not related to the power that must be learned -- Taiji Classics