My warrior is merely an underplayed alt so forgive my ignorance, but I assume SB's superiority only applies to TG? Particularly in the case of SMF with lousy ToT weapons it seems BB is still the better choice?
That is true. This is mainly for TG. SMF should use SB only if you have Evil Eye from Galakras. If you don't have the eye, BB and SB are very similar.