I did notice a lower number that popped up during the attack, but from what I remember, you had like 12+ attacks firing rapidly while the pirate is circling in the air. Using strictly stabby weapons, my pirate only does like 5 or 6 hits while twirling around on the ground, but of course, numbers that popped up were greater.
my normal attack generally hits at over 200 damage, dance of steel hits for under 50... I am using the pistol or crossbow with sword weapons selection and have all my talent points set to maximize that combo.