I just read this in my morning paper (yes, old news, about the probable PG13 rating....)
George says "I don't think I would take a 5 or 6 year old to this. Its way too strong."
He goes on to say that part of Anakin's transformation includes a scene that could scare the bejesus out of little kids.
Also - is much more dark...more emotional. Its much more of a tragedy.
An interview with the Great Flannelled One will be on 60 minutes, Sunday night in the U.S.