Morale is broken. My Sov is cruel & insane, and in fights against a Sov with intimidate we panic as soon as they use their first attack. Nothing else seems to matter: not army size, not killing their units, nada. I was attacking their sov, I had about 12 units, most of them champions with a few summoned giants, and had killed every enemy unit on the first turn except for the Sov (was saving him for last), and as soon as he got an attack my army stood still for the rest of the fight.
Nevermind that I had already taken out 1 faction, and I had this current faction down to 1 city; nevermind that I had taken almost the entire continent I was on, nevermind that my attack power was so much greater than the enemy army's (before I killed their units), nevermind that I had a dragon. Apparently morale is effected by Sov's starting skills, and so far as I can tell nothing else. Yeah, morale is indeed broken.
Going by what Kalin said, 2 posts above, then I'm guessing the Sov's cruel ability only effects your army when he is actually in it? I didn't know that... Maybe I should keep my Sov's ass parked in a level 5 city somewhere, along with his sons.