Well, at the very least, this fan-made The Secret World trailer is impressive in and of itself. But this isn't the first time we've seen a fan take content from a game and create a fantastically appropriate trailer, sometimes to greater success than the game's own developers.
I'm on the fence about whether or not this one is in fact better than the official launch trailer, though. It steals some nice close-up scenes from the official trailer, but I might prefer the fan-made trailer's music. It certainly touches on a different emotion.