Those specs do not reflect those of the P-series (the one in the picture) teh P-series has an intel Atom Z530 1.33GHz, 2GB RAM, and intel GMA 950 graphics
I think the poll speaks for itself. The price difference is so small you'll be much happier going with the Macbook. It will also have a higher resell value than the Dell or the Sony so in the long run, you'll actually lose less money on the Macbook than on the other notebooks.