I forgot, but doesnt ZX have the spinning slash do multiple hits, and the Z3 version not?
It does, but it doesn´t allow you to chain Trible Slash, Rising Saber and Saber Trust after the execution.
Let me explain the Damage Barrier Formular of Z3.
Bustershot (uncharged): 0
Orbit Shield Boomerang: 0
Bustershot (Charged any Level): 1
Charged Saber: 1
Charged Shield Boomerang: 1
1st Slash: 1
2nd Slash: 2
3rd Slash: 3
Rising Saber: 4
Saber Trust: 5
Kuuenbu: 1, 2, 3, 4, 5, 6 ( Any following station of the Kuuenbu rotation has a higher number, so can´t use Kuuenbu on the boss again so soon, if you hit it with the last station of the move, which has 6 for breaking through the Invincible frames. You have than to wait for the end of the Recovery time. When you use 5 for example you cant hit the boss with a trible slash or with the same move again. If you want to cause more damage, than hit it with a higher number. )
Stab Saber: 1, 2, 3, 4, 5, 6