Yeah the game will eventually be balanced out. I find that they would rather use 2H military cleavers even though there shorter.
Well I should check, but I think they just choose randomly. What is odder, they only have one flamberge and one military scythe in their list, but somehow can spawn with two flamberges at once (or two scythes).
Still, I mean you're an Elite troop, why are you using that weapon if you've brought the big one to the field.
Granted, it's probably not a major thing but it would be nice to not look so silly with that huge sword just stowed away.