If you are doing battania playthrough they are not that weak, but im talking from a perspective of not being battanian. They are first to go. But like you said they are the underdogs and you saying they should be a losing faction does kinda make sence, i just always play battania because they are the weakest so it would technically be the hardest to play as. Just hurts me i guess by loving them so much and not playing them they just crumble. Aha but yes thanks for the feedback
Yes, if you are not playing as a Battanian they are almost doomed to fall. But they occasionally do rather well, so it's not impossible.
They just happen to have very bad positioning on the map, and Fians don't have the same auto-calc "weight" that other Tier 6 (Cavalry) units do. So the Battanians tend to lose more often in A.I. battles. Of course the close proximity is good and bad. Good because it makes it easy for the player to defend, bad because it's very easy for enemies to take multiple fiefs in one war.
Honestly the only way to help Battania would be to really alter the map so they are more "spread out". Of course if there was some form of culture conversion Battania might do better too. That's one bad thing about this game, at no point does culture shift occur. Kind of annoying because it means you're always going to be fighting a lot of Imperials.
That said almost one of the Imperial factions is doomed to be destroyed, or nearly so, within the first decade or so. Sturgia seems to struggle a lot too, they might hang around a long time, but they rarely do well without player help.
The only 3 Kingdoms that do well consistently are usually Vlandia, Aserai, and Khuzaits from my experience. And I believe that's mostly because they occupy the borders, with less directions to be attacked from. I think the reason Sturgia struggles (despite having northern border) is because it has 4 natural enemies and their villages are very scattered on the peninsulas. The single checkpoint in the middle of their Kingdom also doesn't help.
The only real problem with Battania is the poor state of their regular troop tree. There's some real trash with the Battanian Scout/Horseman. The Wildling is good on it's own if you know how to skirmish, but it's generally mixed-in with so many other units you can't do that effectively. Ah well what good was it to be able to assign specific units to specific formations huh?