[Agema]

Boulder throwers aren't battlefield troops. They're siege machines, and should be used accordingly. Glaives are okay for Agartha. A nation with size 4 ancient giants would presumably make tunnels large enough for their size 2 youngers to swing glaives. As glaives were designed as a combination axe and spear, in a constrained space they'd be preferentially used like spears and presumably be adequate anyway.

The game mechanics make certain items seem nonsensical from a min-max player point of view. But the point is that to a large extent they exist for flavour. When a pretender God foists himself upon a nation, he is forced to work with their culture, not redesign them from scrath.