>>51528679fighting attacks don't exist in ubers outside of marshadow.
and immuning espeed is neat, but that only affects ekiller who carries ghost coverage on 100% of sets.
it really is worse than regular dusk mane, because it's so much less versatile.
it can't be choiced, it can't be weakness policy, it can't run lum berry, helmet, lefties, etc.
it can't even run calm mind sets for a special ultra, because it has less special attack than shuckle so it does literally nothing until you z-move.
and speaking of ultra, you're just gimping yourself by actually using it. the only reason ultra is even usable to begin with is because of the surprise factor, your opponent doesn't know you have ultra until it's in play.
but since this form HAS to have the z-move, that factor is entirely eliminated.