Eliezer:

"Narnia as a simplified case where the problem is especially stark."

I believe there are at least two significant differences:

- Aslan was not created by humans, it does not represent the "story of intelligence" (quite contrary, lesser intelligence was created by Aslan, as long as you interpret it as God).

- There is only single Aslan with single predetermined "goal" while there are millions of Culture minds, with no single "goal".

(actually, second point is what I dislike so much about the idea of singleton - it can turn into something like benevolent but oppressing God too easily. Aslan IS Narnia Singleton).