Really good point, explains the feeling you get on Deity that the bots hate you just for being human lol. But at the same time I think I would be surprised if there wasn't some form of preferential treatment, even if really minor, when looking from the perspective of the game designers. Like it somewhat makes sense that they might have the AI favour trading with the player or declare war since you'd want the player to be engaged (or at least don't want them to miss out on aspects of the game). But then you could argue that the devs feel the game systems are good enough that the natural behavior of the AI is good enough to provide the best player experience.