yes, but Doom3 is not Entirely Normal Mapped. If you look at some of the textures up close, you can see they are not normal mapped, but just awsome artistic designs.

Also, Doom3 is of course faster, but as you stated, hundreds of thousands of dollars.

I think if you were ceative about how you placed your Normal maps within a design using 3DGS, you could have some very impressive results with good framerates.

Peace out, Clay...