Yeah, but really it wasnt even worth rating it "R".
In fact, I cant think of a single bad word from that movie! Whoah.
Violence? Jurassic park had worse violence in it.
The only reason it is rated R is because of the scene where the guy in the Mech is dying and his face has a cut across it. That has to be it. The censors must have been nuts when giving this an R rating. Either that, or they just said: The hell with it, the other two were rated R, lets do the same for this.
Remember the movie Speed and Speed 2? One was rated R and the other was rated PG-13.