You are cherry picking out of context:
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Senntisten was the centre of the empire. I spent far less time there than some of my lazier kin, but between campaigns I had the opportunity to witness its fits of growth as it spread across the land. In the time before Zaros, at the dawn of the Second Age, Senntisten was a primitive human settlement much like any of the others that dotted Gielinor. It and the villages around it were ruled over by Loarnab, a many-headed god of limited intellect but tremendous might. Zaros's legions trapped Loarnab and Zaros used his magicks to twist it into a living power source for his forces. The arrival of thousands of demons, and the torture and imprisonment of their god, so intimidated the people of Senntisten that they didn't even try to fight. They bowed down in worship of their new ruler.
Senntisten was a primitive tribe, ruled by a beast god. If you read the lore regarding the Codex Ultimatum, Zaros' demon army was actually getting slaughtered by Loarnab. It was Zaros himself that subdued Loarnab. Moreover, the humans surrendered to Zaros' supremacy over loarnab, not necessarily over the threat of violence (we have no reason to believe Zaros threatened them). Here's what the Codex Ultimatus had to say on Loarnab:
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We arrived in a region that was ruled over by (though it would perhaps be more accurate to say terrorised by) a beast that the local tribes had named Loarnab. The locals paid tribute to it by way of sacrifice, in hopes of keeping it appeased, but they were only providing it with a feeding trough. Like a stray virius, feed it once and it will harass you forever more. They worshipped it like a god, and while it is true that the beast had divine power, it was still just a beast - albeit one with awareness of and purpose in its actions.
08-Jun-2015 01:57:08