


The easiest and most likely explanation for why the graphics and unit types are shared lies in "our" universe. But none of these are meant to be direct "shared" units: after all, there's been nearly 50 years since RA1 and C&C1 (you are aware of that?), and you can't expect anyone to be using identical units between those periods. GDI doesn't have a Heavy Tank, just a Medium Tank (as did the Allies). GDI has the Humvee, which is more the spiritual successor to the Ranger. Nod doesn't have a Ranger - they have the Buggy.
