I hate the AI. The reinforcements are so worthless that I have to make sure that I either defeat the enemy before the AI gets there or that there isn't reinforcments near the battle so that I don't even have to deal with it.

My brother was fighting a huge decisive battle vs Carthage. They had 1.5 stacks, he had 2. He started the battle and his AI controlled reinforcements are attacked by Carthage. every man was slaughtered in that army of his. His AI controlled army did a whopping 7 kills!!! The victorious army of Carthage finished with that army and then came over and totally demolished his army.

I really hope that the AI doesn't turn out to be something that was a good idea but totally fell short of any expectations whatsoever. I'll sit here and hope.