Ya I have no idea what was happening. As you can see in the charts, when it was red idle power drain was much better. But I didn't change anything, it just started sipping less power. And I didn't reboot the device so that doesn't explain it. My Nexus 7 just randomly decided to use less power mid way through.
I didn't have any weird apps going either. Most of the time I get pretty decent battery life, but this is the second time something like this has happened. And I never got anything quite like in that XDA thread. Sometimes when watching movies on Plex I can get about 7 hours, but that is just watching movies and the guy on XDA seemed to push his device a little further. I am definitely not seeing anyone get the 9-10 hours that is marketed on Google Play.
Also, battery life is much more consistent on my iPad.
Today, I'm already passed your 2H 22M screen on time. I'm clocked at 2H 36M screen on time and 13H 11M off battery. Still at 62%.
Something's amiss with your N7 or app(s).