There are essentially the same, but the 4 door (and 2 doors) will have a rubber "skirt" piece that runs the length of the bumper on the top and simply covers the gap between the bumper and the body of the car. (it's for aesthetics) The hatchback doesn't have this for ease of use of the rear hatch door. You can remove the skirt and swap them from bumper to bumper, but the bolts are usually pretty rusted!
Good luck,
-Rob