They left out the magnetic power adapter out of the specs... that is like one of the coolest features of apple. Seems like PC's get about 80% there to making a perfect copy and then stop for no reason.
Once every 6 months i run into a situation where i accidentally have my cord kicked out from the computer... either by me, the gf, one of the idiot cats we have, or at a meeting at a client's site, and think "thank god its magnetic and just disengages with no fuss." One time it happened while surrounded by coffee on a small table, and would have been a dead computer.
Plus the ultrabooks are so light, you kick that power cord and that sucker will fly.