A definition of insanity is trying the same thing over and over again and expecting a different result. This defines MS right now with their Surface ads. They keep trotting out the same "comparative" ads, but no one cares. IMHO the Air buyer and the Surface buyer are not the same person. MS is targeting the wrong group. (I'm not really sure what big consumer cluster would devour the Surface, but it's not the one that keeps buying Airs).