Chaos' Cure4 is 1/16, not 1/8, if you want to play odds. (He has a chance of using physicals or specials too, the 8 is just for spells.) The difference is that BoltX can be used on consecutive turns, Cure4 definitely has a cooldown period of 8 rounds.
EDIT: And Jade's still doing high 2HKO damage? BoltX is 160% to average, 70% resistance makes that 48%. Dunno how much HP you see Chaos having, but Chaos will definitely need to use Cure4 more than "once every few turns". He likely needs to use it rigorously every other turn, or perhaps every three? Depends on Chaos HP/MDef respect.
Snowfire: Yeah, you're right. I read ID's notes, and forgot my own.
This, however, changes nothing, I think? Margulis needs three rounds with the clone in play before killing, to get in the five attacks he needs. And 3x1.38 attacks from Valeria > 4 attacks from Valeria. Either way, his best strategy involves not using the clone and praying you see his durability as good enough.
The evade thing's a point, which I had forgotten. Val does have well above average skill, though -10% from Falcon pulls it down to only a bit above average. Hmm. Also, I am forgetting Ratka's animation, would need to decide if it hits physical or magical evade, since I know Valeria had some of her own physical evade to answer back with.