I've noted something strange with battle auto-resolve in 3.90. While Adenian Heavy Cavalry utterly crush most outnumbering footmen-based enemy troops in player-involved encounters, during auto-resolve battles they often lose even to mountain bandits of equal number and take heavy casualties.
Idk if this is intended or not, or if it can be changed somehow. But I think this is worth some attention.
On a side note, in my experience Adenian Cavalry is far too powerful, absolutely dominating the battlefield, and being only relatively weaker at castle sieges (yes, I've read that Aden has the best cavalry, but personaly I find such power a bit over the top).