American Psycho pretty clearly doesn't approve of the acts of its main character, though; in fact, it's a pretty obvious satire of '80s attitudes about capitalism and the sociopathy involved in it. As far as I can tell, there isn't any such critical intent behind Zero Dark Thirty. Depicting something that didn't actually happen and then claiming that your film is factual equates to distorting history, and if that distortion involves making torture look more effective than it actually proved to be, then that equates to a pro-torture bias in my book.