My stats for Monday and Tuesday (1st two normal work days for me with my phone).
Phone died at the 12 hour mark both days. I would say that both days were light to moderate usage (50-100 texts each day, no phone calls, probably 10 minutes browsing each day, flipping through some apps, I also used about 20 minutes of navigation).
So for me I think it could be SLIGHTLY better. It would be nice if the phone died more about 10-1030pm than 8 or 830pm but at least it will likely get me all the way through my work day and then I can plug it in while im driving home.
Tomorrow will likely be a heavier use day as I am site coverage in the office so I will be at my desk most of the day. We will see if it lasts under those type of conditions.
For the most part I run it with a standard wallpaper, 3G on, 4G off, GPS off (except navigation time), Wifi off, Bluetooth off.
Brightness about 20%, haptic feedback off, screen turns off after 30 seconds, account syncing is off unless i refresh it.