Okay, so how about Unites?
For example, the best 2-person Unite in the game, the one with Ronnie and Pahn. At level 60 and level 16 weapons, Pahn has ~400 base DMG, Ronnie has ~375. The Unite (3x DMG) can deal ~2.3k damage in one turn (of course, using up both Ronnie and Pahn's turns).
Pahn's contribution to the Unite damage is ~1.2k, Ronnie's is ~1.1k. But Pahn can't attack in the next turn b/c he's Unbalanced, while Ronnie can launch an attack from her Hate Rune (3x DMG) in the next turn for 1.1k damage.
Therefore, Pahn's DD contribution for 2 turns is 1.2k, Ronnie's is 2.2k. Therefore, Ronnie has better DD potential than Pahn.
Or the Pretty Girl Attack, consisting of Camille, Tengaar, and Kasumi. At level 60 and level 16 weapons:
Camille and Kasumi have ~330 ATK, Tengaar has ~290. Unite deals 2.5x DMG, for a total of (330 + 330 + 290) * 3 = 2850 DMG.
Camille and Kasumi contribute 990 DMG each in that turn, Tengaar contributes 870.
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.
In two turns, Kasumi contributed 990 DMG, Camille 1880, and Tengaar 2175.
Am I doing this right?
It's not all about knowledge, but it helps.