"This isn't actually true."? Sounds like it's completely true. "But they had reasons!" For boosting all the three star units? For weakening every units you can get from shops*? Sure, I mean, call it what you will, I'm not wasting gear on Ceilim now that she has the weakest special attack in the game**.

'Slightly lowering' Leina's crit = 40% damage loss? Well that doesn't sound right. Also misses the point that the reason she's broken is that every knock-back interrupts the attack cycle of the opponent. Eg - Elnora should destroy Leina by typing, but Leina is hilariously effective against Elnora because she prevents her from ever getting off her five round burst. Same with Emily's fire shield.

Khalis's main problem is that anything that gets in close doesn't get hit by her wardbreaker. Also she's more geared towards taking down big targets or groups than single targets. Her extra attack is a burst of five shots like Elnora, but in a spread instead of a stream. If her basic attack pierced like her soul attack she'd be a monster, but still mechanically worse for arena combat than Elnora. You can't address that kind of mechanical advantage by shoving damage numbers around unless you're doing it specifically for arena.

* Except Emily and Meryl, who didn't get stronger and who no one cares about anyway.
**Except possibly Feita, who might actually be bugged. I know Feita's soul attack is some kind of broke.