In the context of the article I believe he's talking about devices that run full-fledged operating systems, rather than mobile devices.
That being said, the 13" MBA has the best battery life out of everything on that page. I also imagine the Shield is somewhat compromised for web browsing, given it's been optimized to be a gaming machine.
That being said, the 13" MBA has the best battery life out of everything on that page. I also imagine the Shield is somewhat compromised for web browsing, given it's been optimized to be a gaming machine.