Hey, sorry for necroposting, but I had a problem with Jutta in an Arena game just now.
In a previous game, when I had a 12 power other unit, she didn't damage herself, but when I deployed her here, AFTER my opponent boosted his whatever on the melee row, she still halved her power. If it's supposed to play like this, her description should specify if she's the strongest allied(?) / unboosted(?) or xy unit to be able to play her to her potential.