This movie should be seen anyway because it is such an important technological work.
So, as you will be seeing it, you might as well see it on the big screen where you can truly appreciate its magnificence.
The effects are wonderful and although it is true that some themes are already present in "Dances with Wolves" this movie goes much further. It is written simply but alludes to Global Warming, the power of the Corporation, the historic treatment of the American Indians, the iraq War, Shock and Awe and the Avatars we become on the internet.