Fan-Fics: Why Are Avatar's Better?

[Sovereign]

I've not been fond of fan-fics for many of the fictional universes I enjoy (Avatar, Star Wars, Star Trek, Halo just to name a few). I have listed these reasons before but for the sake of discussion I will list them again.
1. Poor use of the English language.
2. Only purpose is to write out a fanboy/girl fantasy.
3. Fails to fit into the context of the fictional universe it purports to be about.

Why do you think that Avatar seems to have higher-quality fan-fiction than other franchise? Or, if you believe this is not the case, for what reasons?

I personally believe Avatar's effect has gone well beyond others in its effects on people. You don't hear about "Post-Star Wars Depression," do you? I'm sure this idea of "PAD" was partially an ill-conceived attempt to mock "Avatards" but clearly no other film has generated this type of reaction. At least not recently, anyway.

The emotional response garnered from the film, I think, ensures that most fan-fics will not fall into #3. Further, I believe the people who the film effects in this way are altered on a "higher" level, a more intellectually-stimulating (rather than raw adrenaline kill-'em shoot-'em) response. This reduces the likelihood of #2 but certainly doesn't eliminate it.

As for #1, this is "teh intarwebz..."