Shadow Yukiko is nerfed. She's weak to ice here prince charming doesn't heal her, and he runs away as when he's low on health. Burn to ashes only does 60 damage compared 100+ damage to you took originally and she no longer has mind charge.
Then again, that might only be on normal. It seems like AI and enemy skills change depending on the difficulty this time around. As long as I can set the game to be challenging, I don't mind them making it more accessible to newbies at all.
You have to admit, Shadow Yukiko is kind of a silly difficult curve. I wish the other bosses in the original P4 were as cleverly designed.