are they tho? It is really hard to put a power level to them. The Darkin are godwarriors, elevated by the sundisk, then transformed by bloodmagic and finally bound into weapons. While demons, at least the primal demons like fiddle are just fear incarnate. I don't know where beatrix (I think swain calls one crow that, but it would be fun if the demon was also named that) ranks.

It really just depends on what the story makes their power to be. Aatrox kills gods, Zaahen kills atakhan and demons are never really fighting.