I dunno, Rose's one is fairly easy to get off, about as powerful, but much easier to land (ive tried jumping out multiple times only to have it clip my toe and suddenly cut to it wrapping around my wrist -.-). akuma's one on the other hand is trivialised. i mean ive done it as people were in the process of standing up, and it'll slide into them, doesnt grab them, just pushed them back. i prefered ultra's when they were fast, none of this big exagerated crap in front of em. made them far more dangerous in games.