Pretty much. If you were good with Terumi, he's actually not that difficult. Terumi experiences very much the same problems, but Susano'o has much stronger tools to deal with them, and a fairly decent mixup game with two standing overheads and of course some lows, not to mention he has very very good reach with some of his moves, especially j.5B.
I was never good with anyone, so... xD
I started "playing" (read: barely) in Continuum Shift original and tried picking up Mu-12, but I never really got into the scene though I wanted to. I told myself after Continuum Shift II I'd wait till Central Fiction and pick it up again, this time being more dedicated. I'm pretty much brand new to the game.