I don't know if the mod has any influence on the automatic battle results, but i observed something very wrong.
At some point, i noticed a stack of 1200 soldiers of the Empire (a lot of lords joining forces) against a big spawned army of Heretics.
As a vassal of the Empire, i joined my side in the battle.
It was nearly 1300 vs 700
In the 1st turn of the battle, the Heretics annihilate -every- of the Empire troops with absolutely very few loss (despite the Empire and myself were fielding very good troops), i don't think i ever took a part of a battle that was so one sided since the 1st time i played and attacked a snake cult party of 20 with me only being at level 2 and fielding 5 empire levy recruits
At the end of that 1st turn, i was then alone for that turn and there were half a hundred of heretic horsemen charging after me while i was trying to circle them, hiting a horse of a demon on it on each pass.
It was obviously hopeless and after several minutes at it, finally i was downed too (arrows or javelins got me).
I was unable to get in the next turn (probably my healers companions were all KO too), so i had no choice but select to send only my troops and let the automatic battle set the result.
In 3 more turns, the battle was completed, with the Heretic army fully destroyed, and the Empire side having lost at max ... only a hundred of people ?
How very very wrong considering how much more insanely strong the Heretic army troops were in comparison to everything the Empire was fielding in that battle when i was visually witnessing it.