So, far I am feeling that my battery life is a little better, Last night I went to bed, and checked it, this is after a day of about 40 texts, 2-3 under 10 min calls, checking email every hour at least, browsing the web/Weave for at least 45 min, and a minor game or 2 (not intense/high graphics games)
When I put my phone on the charger I had 68% left....
I did disable everything accept for 3 apps in the background, Disabled all the little things that we did on the DP (sync across devices, NFC/push to pay, etc). I do have "Hey Cortana" enabled but, no tile on my desktop (claimed to use up a lot of battery)
I guess it's all subjective and will vary per day but, It seems better than the DP, after doing this type of stuff by 10pm, I would see the low battery message.
Again, I hard reset and did not restore from backup...