Except Terran had no reason to fight Kabrinskia after the peace terms they got. Terran has lots of reasons to fight Aurvandil– first and foremost, the occupation of Paisly, Paisland, Maeotis, Evanburg, Kydonia, Gallaecia, and Celtiberia.
Oh well Aurvandil won't be keeping Paisly for much longer, which we only took as a reaction to Terranese territorial advance into the fortified position of Paisland. We can't let Terran hold a Motte and Bailey on the bottleneck border, especially if Terran does start bringing down the northerners, it would give you scope to campaign into Aurvandil with relative safety against Aurvandilan counter attack.
Also, Terran scarcely had a reason to fight Aurvandil considering the peace terms we were working out with Barca, which put everything to Barca's favour and largely left the terms to their choosing.
