Aside from knocking Rainbow Dash backwards, this attack actually did little but leave Skully open to a powerful Back Slash from Shulk. The fact that the attack hit the back of the ship combined with Shulk's Buster Art meant that the attack did so much damage, a portion of the armor on Skully's ship fell off. "How's that for ya?" Shulk taunted as his Buster Art wore off.