Both of which are very incomplete and highly unreliable.
It's kept updated by the public, with references to sources of information, and moderated by a selective few ... making it a bit more reliable than just the word of a stranger.
Then how come every time I visit either website, I usually spot a mistake within 5 minutes of being on the site?
Their choice of references is strange. I've even seen random forum posts used as a reference by Wikipedia.