Daniel-
Well, that's probably only because e2 has many more articles.
Actually, it's because Everything2 started out as a project by one of Rob Malda's friends and even resided at everything.slashdot.org (at that time it was just called "Everything"). It is now independent, but unfortunately has never been able to scale. And the few really good articles that are there are copyrighted by their authors. Pity.
Regards,
Erik