The latter appears in the official trailer, but it makes no sense. Could it have been an error? * You can blame James Cameron for that. He got lawyer-happy when he found out his precious "avatar" title was already being used by someone else. * Is that a fact (that James Cameron threatened to sue them over the title of this cartoon, not the live-action film?), or a theory? * Take your pick. The possibility of a lawsuit brings financial risk with it, since win-or-lose a lawsuit would be very expensive. Best to just avoid the issue altogether and move on. * Is it a fact that there was no official lawsuit, but they changed the title to be on the safe side, or is that just a theory? * Apparently, Nick's application of trademark for Avatar: The Legend of Korra had an underwear