6 play throughs, seen that happen a single time - mostly because I heavily recruited there from early to mid game. Also have seen many conflicting reports as well, so I don't know what consensus you're referring to. I guess my point would be, why should it matter if sturgia loses often - as long as you as a vassal are still able to conquer the world with them?
I agree, I haven't seen a lot of the Druz cavalry and I agree that the AI lords need to train units more. But as I said in my original post, the missle cav is far easier to train than any other cav unit - so the lack of the Druz in a campaign where Sturgia is losing makes a lot of sense. That's just a symptom, not the actual problem.
The issue is that the AI is way too aggressive currently - it frequently starts wars and needs to defend or attack something constantly - never giving it time to actually get anything other than recruits (because all the vassals are doing the same thing and the towns are empty). Basically factions don't seem to stay in peacetime for more than a few days and that causes a lot of problems, especially for factions that are losing. A losing faction should seek peace often, and a winning faction shouldn't repeatedly declare war - a treaty would help alleviate some of the issues. Especially as the player when you buy peace just to have that faction immediately declare war on you again within a second or two. Pretty frustrating to deal with in the mid game.