I'm always cautious when it comes to benchmarks and these custom looping tests. I look more to real world use than these. Not that I think Motorola couldn't have put a larger battery in this phone. I've seen several reviews and while they certainly don't rave about the batterylife, they all have said they get through a day. Of course that depends on the user. Heavy users will have worse results.
Engadget:
“ …Motorola managed to keep its word with regard to an all-day battery -- the X stuck with me for just over a day of on-and-off web
browsing, texting, Kindle reading, YouTube watching, Rdio streaming and Google Maps navigating.”
CNET:
According to our light Wi-Fi browsing test, the Moto X has acceptable but not exceptional battery life, which is probably the biggest black mark against it…. In regular mixed use it had no problem lasting for a waking day, though of course this will depend on what you're using it for.
TheVerge:
The Moto X lasted 8 hours and 44 minutes in our battery rundown test, which is a strong showing, and I was able to get a full day of use out of it before needing to juice up. It’s not as long-lasting as the LG G3, HTC One M8, or Galaxy S5, but it should be good enough for most people