I just double checked the CAD file and the wrap around wings are actually 3/8" shorter near the tire than the other picture. Yes, this will be that way on on both models.
I think most of what you are seeing is that it looks like the main bumper sticks out further around the grill area on a 2000, but the bumper location is EXACTLTY the same on both relative to the frame and has not changed. The grill on the '02 just sticks forward about 3" further.
BTW, in case you are curious, it would not be possible to move the bumper back on the 2000. There would not be room for the winch.
Jim
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Jim Shrake www.ShrockWorks.com Armor! - Bumpers, Sliders, Skids