After playing through the same siege battle multiple times each time I have noticed that with the AI using the catapults cant destroy a single piece of enemy siege equipment. Played the fight 5 times to test this with the same fire catapult defenses. these are supposed to be the best for the defends yet they do nothing. they aim way to high to be effective against enemy infantry which with firepot rounds I expected to be focused on infantry not siege equipment after approximately 1 minute of advancing the towers coast under the rotation of the catapults and can no longer be shot at. During siege battles as the attacker I never use the ranged equipment and my siege towers nor my battering ram ever get destroyed by enemy siege defenses. With the current issues it comes down to who has the best infantry and they just bust open the gate on pile on the walls as your siege equipment is useless. I noticed a perk in the medical line that has 30% more siege equipment casualties not killed but again this is pointless because you only lose them to ballista's and rarely at that. catapults are completely useless and you cant pick what to build as the defenders even in my own fief so getting a ballista which is decent if you target enemy archers, as it can punch through multiples of them is random at best. I personally think that a large problem with steam rolling factions is because sieges are ridiculously easy if you have a decent infantry assault force as the defenders cant do anything. additionally ballista don't even punch through shields and I guarantee that they did with ease.