An important thing to remember is that those are gauged times for USE. You need to be physically browsing the web for 5 hours, physically making calls for 8 hours, etc.

If you mix the web, calls, mail, texts, media, etc; and spread it out through the day, the vast majority don't actually commit to 5 hours of real USE by the time they go to bed. I can't even see a power user truly pushing 5-6 hours of mixed use in an 8-5 workday.

I am not saying you are doing this Dawgfan, but many people mix up the claimed usage time with the phone just being on, and their opinions are greatly skewed by it.