Now, I know this will shock... shock you: in order to get a really fizzing-good documentary, a production team played fast-and-loose with the facts. The horror!
To me, the controversy regarding the Gospel of Judas and National Geographic's handling of it sounds a lot like sour grapes from a group of academics quite patently not familiar or happy with the huggle-buggle dashing around of all these flamboyant commoners! Working for money, no less! The rest is the standard slow-motion slugfest common to just about any collection of academic journals when something really new shows up.
Which does absolutely nothing to dim the astonishing discovery of an entire ancient book previously known only from a single throw-away sentence written by a disapproving bishop nearly two thousand years ago. Amazing!