Looking at how the battle unfolded, I think the mechanics are pretty realistic.
Yes, the peasants did do low damage. What did you expect? They're unarmored, and use flails and pitchforks at best. Armored infantrymen will easily cut down any number of them, as long as they're not to tired to swing their weapon (or they're not trapped by the mud as in Agincourt).
This explains why, you know, they have low CS? Cohesion, training, and morale are all accounted for in the CS calculations. So why are they less effective per CS than other troops, when CS is supposed to be a neutral measure of combat strength based on all these other factors?
