What Nintendo has tended to do, at least as far as I can tell, is to use shaders smartly instead of throwing them everywhere like so many other companies tend to do. Their focus has been more on hitting 60 fps, getting the most out of normal textures, and lighting. I think it's a smart philosophy. Not every surface in 3D World has to be bumpmapped, but it is really effective when they are.
Have they confirmed that each blade of grass in the real Zelda U is reacting to the wind individually? It'salready impressive to have that much grass be made of polygons.












