I can't find a single difference, apart form the screen size (but same resolution).
If that is true one is paying $100 extra for the Air only to have a bigger screen (which might actually be less expensive, given the reduced challenge of putting the same number of pixels on a larger area).
If that is true one is paying $100 extra for the Air only to have a bigger screen (which might actually be less expensive, given the reduced challenge of putting the same number of pixels on a larger area).