Does anyone know how savage blow builds up now?

Level 01: MP - 15 / 40% Damage / Attack x 4
Level 02: MP - 15 / 44% Damage / Attack x 4
Level 03: MP - 15 / 48% Damage / Attack x 4
Level 04: MP - 15 / 52% Damage / Attack x 4
Level 05: MP - 15 / 56% Damage / Attack x 4
Level 06: MP - 15 / 60% Damage / Attack x 4
Level 07: MP - 15 / 64% Damage / Attack x 4
Level 08: MP - 15 / 68% Damage / Attack x 4
Level 09: MP - 15 / 72% Damage / Attack x 4
Level 10: MP - 15 / 74% Damage / Attack x 4
Level 11: MP - 18 / 60% Damage / Attack x 5
Level 12: MP - 18 / 62% Damage / Attack x 5
Level 13: MP - 18 / 64% Damage / Attack x 5
Level 14: MP - 18 / 66% Damage / Attack x 5
Level 15: MP - 18 / 68% Damage / Attack x 5
Level 16: MP - 18 / 70% Damage / Attack x 5
Level 17: MP - 18 / 72% Damage / Attack x 5
Level 18: MP - 18 / 74% Damage / Attack x 5
Level 19: MP - 18 / 76% Damage / Attack x 5
Level 20: MP - 18 / 78% Damage / Attack x 5
Level 21: MP - 27 / 71% Damage / Attack x 6
Level 22: MP - 27 / 72% Damage / Attack x 6
Level 23: MP - 27 / 73% Damage / Attack x 6
Level 24: MP - 27 / 74% Damage / Attack x 6
Level 25: MP - 27 / 75% Damage / Attack x 6
Level 26: MP - 27 / 76% Damage / Attack x 6
Level 27: MP - 27 / 77% Damage / Attack x 6
Level 28: MP - 27 / 78% Damage / Attack x 6
Level 29: MP - 27 / 79% Damage / Attack x 6
Level 30: MP - 27 / 80% Damage / Attack x 6

Level 9 SB > DS. I don't know about mistaken hits, probably just a glitch, or a misperception.