Camille and Kasumi have ~330 ATK, Tengaar has ~290. Unite deals 2.5x DMG, for a total of (330 + 330 + 290) * 3 = 2850 DMG.
it should be = (330+330+290)*2.5=2375
Kasumi is Unbalanced the next turn (perma rune attached, same predicament as Pahn), and Camille has a maximum normal DMG potential of 990, Tengaar has 290 * 3 * 1.5 (if enemy is weak vs her Wind Element WPN) = 1305.
Also, it's not good here, why do you count the next turn as a sure critical hit for both girls? And didn't we agree to not count on weapon element and save it for last just to decide tied ranking?
If you plan to let camille and tengaar normal hit in the 2nd turn then the formula should be normal attack*average DM from critical
camille has 200 skill and 120 luck< total 320> => 10% crit => her average damage should be = 330(1*0.9+3*0.1)= 396
tengaar has 180 skill and 100 luck <total 280> => 9% crit => her average damage should be = 290*(1*0.91 +3*0.09) =342
So in average: with this unite
-Kasumi deals 330*2.5= 825 every 2 turns-> 412 per turn
-Camille deals (330*2.5)+396= 1221 every 2 turns-> 610 per turn
-Tengaar deals (290*2.5)+342= 1067 every 2 turns -> 533 per turn
Conclusion: physical damage potential for Camille and Teengar is well optimized in this unite but is a nerf to kasumi since she could produce 330*2=660 every turn by herself with Shrike rune or participate in ninja unite with same result.