[mikepurvis]

Notability is one piece of the puzzle, but the other is ensuring that Wikipedia content is not written "in-universe". Fandom has no such restriction, and in fact skews the other way, with content being assumed to be referring to fictional people, places, and events as if real, unless otherwise noted.

I think this is a valid barrier for Wikipedia, and the desire to describe fictional worlds this way is a good signal that that content is a better fit for a more fan-oriented forum.