I don't mind AI cheating, especially in strategy games, it would be way too complicated to develop an AI good enough to beat players on some more complex games, so giving the AI a slightly advantadge is a good thing to keep those games more entertaining. However that type of thing should happen in a way that the player wouldn't notice or at least not feeling that impactful, but on Warhammer it felt like a bit too much. When I started out and didn't knew that the best way to deal with the ai is to take their cities at all cost, I saw Bretonnia materializing some very good armies just one or 2 turns after me wiping out 2 of their 3 lords. It was more than clear at that point how much of an advantadge they had even with a shitty economy. It is nowhere near as bad as some other games like the Anno series for example, but I was kinda mad that my "attrition war" strategy wouldn't work in this game.