I feel like every phone has a "catch all" that the basic phone operations fall under, as far as reporting battery drain. I don't think that the battery drain is higher than it should be for my phone, and my android system has shown as high as 36%. Even with that, the phone was still at 62% after moderate use at work all day (10 hours). That's better than any other android phone I've had. My V10 would have been around 20-30% after a day like that.
One thing I have noticed about this phone is that it doesn't sit at 100% for very long at all. Previous phones I've had would sometimes still be at 100% when I got to work in the morning. This phone is at 98% before I get to the car. I think it's all in the way that they report the percentage. This phone appears to be more linear, and other phones try to fake you into thinking the battery is going to last forever by making it stay at 100% for an hour or two.
Try to judge the battery life in a general, overall sense, instead of watching the draw of each application. See if that changes your opinion of the battery life.