Also to note, Emperor Solus was the one on the Anti-Primal/Beastman crusaid. Emperor Galvus on the other hand simply seems to be for the traditional "Storm the lands and take them by force" concept of conquest.

Being more akin to Allagan conquest, The Magitek would naturally be far more interesting than a primal. Especially one so easily defeated. (Discount ego boost for their flag ship)