Mobs on same faction conning differently?

[TheBlob]

So I have begun the task of transforming bone chips into friendship with iksars and was surprised to see that, at some point, Crusader Bodli glared at me threateningly (success!), while Crusader Quarg was still scowling at me, ready to attack.

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https://imgur.com/a/hBXzBrR

The way I understood faction, any given NPC was on a single faction, and the /con of this NPC depended on race, class, deity, and the modifier resulting from lowering/raising the faction. Based on that, I would have thought that both Crusaders would be on the same faction and would /con the same. Unless the base race/class/deity modifier was unique from one NPC to the other, inside a same faction? For example, Crusader Quarg hates high elves more than his colleague Bodli? Does anyone know about this?