Yeah, bad draw for them. So it goes.
Found a relatively good visual aid of AI Peppita countering -
http://www.youtube.com/watch?v=tAXLdHUC4qAShe does a passable job at least and like I said her AI counter performance can be improved if she doesn't have anything like Kaboom set as short range skills. I stuck her in front a Convictor on my latest Cliff/Maria/Peppita file, then left her alone and she countered just fine. It's not as if allowing Peppita her counters in the DL makes her particularly broken or anything, she still explodes to any good, fast mage w/th magic nukage (not Meru because Meru has to use a turn building SPs but yeah)
Edit: Here's another -
http://www.youtube.com/watch?v=xR1fSs70mucFayt vs Peppita after the manual Sophia is down. Worth noting that Peppita goes from near half HP and in the yellow danger zone to actually winning that match. Also she loses her X counter to follow up with Kaboom there near the end. As Monkeyfinger verified a long time ago the chaos hit rate on Peppita's O counter is insane ... X counter less so ... but that one after a couple or so uses too. Plus she doesn't have her dances in the game's vs mode and I really think that factoring in Healing Dance/what she has in the actual game/DL w/th that and she really has a fighting chance vs Raven. Or if she scores chaos with her counter and follows it up with Panic Dance chains for constant 5% HP/MP loss per chaos tick (not that the MP loss part matters here but yeah)
Mrmm I still think we have to take some merit of player skill into account too here. Afterall Peppita isn't the only one in SO3 w/th AI issues
Some of these things like AI L/R Max Shockwave or Ice Daggers > Mirror Slice the characters won't do consistently in game. Indeed only Maria has what I'd call pretty damn reliable AI (at least once SP is poured in her AI Attack stat)
*continues gnawing away at Snow*