Damage values:
Zantetsuken base damage: 24000
Skyshatter INNER circle base: 32000 (2 x 16000)
Skyshatter OUTER ring base: 16000
Skyshatter damage tooltip:
// Delivers an attack with a potency of 16,000 to all nearby enemies. (10y radius)
// Potency is doubled when targets are within 5 yalms.
Geirskogul damage increase: +25% for 10s
Hissatsu: Chiten's "Kuzushi" effect: +25% dmg to target with the debuff (from SAM only)
Skyshatter OUTER: 16000 + (16000 * 0.25) = 16000 + 4000 = 20000
Skyshatter INNER: 32000 + (32000 * 0.25) = 32000 + 8000 = 40000
Zantetsuken (if it didnt have instantkill): 24000 + (24000 * 0.25) = 24000 + 6000 = 30000
Respectfully going to disagree, I mathed it and tested it.