Well I have had more than my fair share of Androids and I've done "this" type of thread repeatedly. You have to take into account that when you are in a sub-forum specifically dedicated to one phone, you tend to find quite a bit if people who own the phone themselves and they can get a bit "fanboyish". Don't get me wrong, there is a lot of good info here with the battery stat screenshots - but you will also find a bunch of people who own the phone and, for whatever reason, don't want to accept or admit when their phone (whichever one it is) has issues.
I'm sure this particular phone (HTC One) has decent enough battery life - but I don't know if I'd agree with one of the previous posters that 'the reviews have more than positive'. I know when I was considering the One, I had to take into account a few things:
1. Some people were pleased with the battery life, and some had issues. The general consensus has not been overwhelmingly glowing.
2. You cannot swap fresh batteries in and out - if so desired.
3. It's been reported that the phone takes a long time to recharge.
Take a similar phone (in terms of the details above), the iPhone 5.
1. Battery life - for your average Joe Schmoe, it has good battery life. For me, it is decent because I'm a super crazy power-user.
2. Non-removable battery.
3. The recharge time is sick. Insanely quick.
So for me, because I am a power user, battery life is crucial. And after looking at the three criteria above for the One and the iPhone 5, the third one is what seals the deal for me. #3 makes the iPhone 5 manageable/delightful.
It's all a out the individual user though. A lot of people on here have a passion for the nitty-gritty side. And they enjoy trouble-shooting, experimenting, etc. And that's wonderful for them. But because of how much I use my phone, battery life is right up near number one for priorities when it comes to selecting a phone. I don't have the patience to trouble-shoot and tinker. And that's okay too. To each his own. Thank god we have so many different devices to choose from