Pretty good movie, its basicly Die Hard 4 for younger kids. I have not seen the PG-13 one, but this is what i got out of the unrated:
Violence: People are killed (never graphicly shown. Someone is stabbed (all u see is blood on the knife). Someone gets hit by a car (blood is shown on face and ground). There is other fighting violence in the movie.
Language- 2 f-words, multiple s-words, one or 2 b-words and many other minor words.
Sex- there are a few sexual comments near the begginig and spread thru a little