IMHO, resolution is typically over rated.
Here is why I think that:
For one thing, I used to over rate it.
For another thing, if I run the
X-Isle demo at 640 x480, and ask people what resolution they think it is, they always say 1024 x 768.
Also, the textures are typically MUCH lower resolution, so depicting a 128 x 128 resolution texture at 1024 x 768 still looks like low res until you get pretty far back away from it.