BrownDust-ism.

Addicted To Gacha

Damage Analysis Benshina

Calculation is based on HP=38444(Vitalx2), and grave=3.

Rune Comparison with Mary+10's Buff Crit% Min Max Avg
[Vital 40%] + [Vital 40%] 100% 68875 68875

Rune Comparison with Stella+15's Buff Crit% Min Max Avg
[Vital 40%] + [Vital 40%] 100% 60004 60004

Rune Comparison with Michaela+15's Buff Crit% Min Max Avg
[Vital 40%] + [Vital 40%] 59% 15221 79778 53310

Rune Comparison with Stella+15, Michaela+15's Buff Crit% Min Max Avg
[Vital 40%] + [Vital 40%] 100% 83749 83749
[Vital 40%] + [Shield] 100% 68077 68077
[Shield] + [Shield] 100% 52406 52406

DMG by Num of Grave(s) Stella+15, Michaela+15's Buff 0 2 4 6 8
[Vital 40%] + [Vital 40%] 35811 67770 99728 131686 163644
[Vital 40%] + [Shield] 29110 55088 81066 131686 133022
[Shield] + [Shield] 22409 42407 62405 82403 102401

DMG by Skills Stella+15, Michaela+15's Buff Normal Attack Titan's Strike
[Vital 40%] + [Vital 40%] 13227 70522
[Vital 40%] + [Shield] 13227 54850
[Shield] + [Shield] 13227 39179

Avg = Min × ( 1 - Crit% ) + Max × Crit%
Using ★6R Assault 40% as base line. Other runes uses values equivalent of that.
Calculation of rune comparison is based on ★6 max level and max skill (+10 or +15)