[The Panther]

I believe that your own army will never rout if the enemy has already completely routed. This happens regardless of how hopeless it may be against a berserked SC that stayed to fight after his side previously declared that the battle was 'over' by retreating. Your Seraphs will then all fight to the death because the AI had previously decided you had the battle won and were in the mop-up phase, regardless of the actual truth of the situation. I also believe that this never changes until the 50 turn limit is reached, even if your own army starts dying like crazy and ought to then rout on its own.

This seems to be yet another indication that the AI is not programmed to handle SCs at all.