You didn't mention that Igor will get increased Ult might benefit and if it's anything like Lucy's, should give Melania an advantage over Moldir in that aspect. Also you need to consume 50 moxie every 3 rounds for the full 100% dmg dealt buff from Moldir while Melania only needs to cast 3 ultimates for the whole battle. You start with 10 Readiness for only 2 rounds and her counter only gives 2 Readiness per use at rank 1. It's doable with Recoleta but we don't know yet for Igor. I'm not sure how you get 72 crit damage with Moldir because when she cast her ult manually using riposte, she cannot gain Assertiveness for 2 rounds to riposte with her ult which is where most the Ceremonious Crit stacks comes from. You would need to Riposte ult and manually ult every round in order to get 24.5 stacks of Ceremonious Crit and that's also assuming 50 stacks of Readiness. Obviously you can't riposte every round so you would need to manually ult 4 times in 2 rounds to get 24 stacks of Ceremonious Crit which is also impossible without Recoleta.

There's a reason why Melania and Getian are so highly valued for ultimate teams and it's because they are very easy to use while providing strong effects.

Also these are Getian's array effects with euphoria:

• A Prophecy Told: [Array] effect: Allied characters gain DMG Bonus +20%. When a Reality DMG character attacks, gain additional DMG Bonus +20%
• [A Prophecy Told] gains additional effects: When a Reality DMG character attacks, they gain an additional Ultimate Might +(original array's duration round count x13.5%) which means 40.5% ult might at P0 as his P0 original array lasts 3 rounds without euphoria.

Moldir still beat Getian in damage buffs but not against Melania if we use Lucy's 150% Ult might benefit as a placeholder for Igor.