I really want to hope it is the SCRIPTED part that makes the bretonian AI do stupid things.
Otherwise it is just so disappointing... an artillery heavy army charges its weak cavalry over the river into a densely packed mass of infantry... that is horrible to watch!
1. the ai fails to evaluate the position of the player forces
2. the AI fails to evaluate the relative strength of forces
3. the AI fails to use its whole army even when the player gives that choice
If this was a good game, they would have shown us 2 videos of the same battle.
Battle 1 would be where the Orcs charge the humies, crush the expeditionary forces and then deal with the arriving main army. It would be utter chaos, no battle lines, charges and countercharges from both sides and lots of friendly fire from bretonian arty.
Battle 2 would be where the Orcs stay in the corner, get heavily damaged by the trebuchets, then get shot by the bretonian archers and only after all missiles at the bretonian side are exhausted, get mass charged by human infantry with cavalry looking for gap in fomations.
the first one would be a phyrric victory, the second - maybe even a defeat.
So my take here is the following, the CA have
a) have once again produced an idiot battle AI, and/or
b) have been unable to design even scritped/quest battles right (where they could nudge the AI into the right direction)