SSJ is resourceful, and he has the intellect, but I've not seen enough from him as a general and/or strategist to put him up there with some of the names mentioned.
His role in the Ri Boku Army is really more so as its fixer. He does whatever, whenever, wherever - so long as it suits Ri Boku's needs. He's sharp and versatile in general, but he's not an impressive general so far.