Think of warpath as our Jurassic and Cretaceous and that third one all rolled I to one.
It's a world just beginning to evolve, but instead of reptilian dinosaurs, we get mammalian ones. There are a bunch of tribes, so far we've seen the vulpani, the fox like guys who were wiped out completely in rise. Infestation introduced us to the leothera tribe with karani. These species, and others like them, are smart and use tools and weapons (and apparently have discovered sword smithing!) They are like our homo sapian, the first chain in evolution that leads to humanity.
Hulkers are like the homo erectus. Human like, but still savage and brutal. There are a lot like them out there, and in time it wouldn't be unreasonable to assume that thier kind and the smaller, smarter kind would fit for dominance. Put money on the smaller, smarter, tool wielding race!