I am looking for some observations on how well the AI uses seige equipment and cannons during seiges and I am wondering if you could share your experiances.

How often does the AI break down your wall or destroy towers when it uses siege equipment and cannons? Have you ever lost a seige battle because of the AI's use of these weapons? For you history buffs, how many feild battles in the middle ages where fought with catapults and other siege equipment? For that matter, how commonly where catapults, trebuchets, and cannons used to attack castles and cities?

Thanks in advance for your observations. I get sick of fighting field battles where the AI uses seige equipment and cannons. I think that these weapons are overpowered on the battlefield and I cringe everytime a well placed shot chews up half of my veteran troops. I am planning on removing these weapons from my game, but I wanted to see if it would hurt the AI or be unrealistic.