The 64GB Pixel is priced nearly the same as the 13 rMBP and other than the unique aspects of a touch screen and LTE, is almost half the performance of the Mac. And if something happens to your laptop, who do you really want to call for support, Apple or Google?
I'd love to see some serious competition to Apple, but it's not there yet.
Compare the specs between the two, half the RAM and a much lesser CPU. GPUs are the same, but the storage is halved too. No Thunderbolt or USB3 even. Battery life is significantly better for the MacBook. All for basically equivalent prices. It's a nice looking machine, an I'd actually prefer the Pixel screen ratio to the Mac's, but the performance to dollar ratio lies clearly in Apple's favor, and if you have any hardware hiccups, the value of Apple's support vs Google's notoriously absent support cannot be ignored either.
I'd love to see some serious competition to Apple, but it's not there yet.