Writing something in screenplay format, especially on Final Draft, is incredibly simple....it does 99% of the work for you, that's why we love it.
Plus, as someone who has read the scripts of both The Dark Knight and Inception this is totally not Nolan or Nolan's style of writing. Chris' style of writing is more concise and "Hemingwayish". Very short sentences. Very utilitarian, while still conveying emotion and imagery. He also writes more like a director. A lot of "and we...." and camera directions are used throughout. Jonah is a little more of a "show me" type writer. He's more descriptive, but not in a clunky, juvenile sense like this "script" is. His action is easier to follow, as well. If I hadn't seen the Prologue, this "script's" description of the events would be hardly awe inspiring or even comprehensible as a whole. Go read The Dark Knight, read the action scene with the Batpod....Jonah Nolan can write better than this...
This is a fake....and after rereading it, not a very good one. Plus, it would have to be a PDF of a hardcopy, which this is not... This is just an uploaded FDX file from someone's home computer....
-R