Hmmm interesting. They seemed to do just fine in my own tests (note I use small unit sizes for tactics), but the wall bonus is hardcoded and very high.

Are they performing badly on the field as well? They are meant to be a field version of halberd infantry who can stand up to some of the sword infantry in pure infantry melee, but are best against mounted units, because of high attack, mediocre defence and decent charge bonus. Their halberd of course also give them the armor piercing bonus.

I'll have a look around when I get the time, got a lot of RL projects currently wanting to get done (end of financial year and all)