No, I'm not. However, there are a lot of factors that go into battery performance. Some of them are listed below...
how strong is your signal - weak signal will drain the battery quickly
what is your screen brightness set to - I've found that 20-25% is easily enough for me, and I've disabled the autobrightness setting
what apps are you running - apps need to be optimized for our version of the OS
how much screen on time (SOT) - you can check in the battery screen
if you are gaming or watching videos, those are pretty processor intensive AND use a lot of battery bc the screen is on the entire time and the phone is ACTIVELY working to process the incoming/changing data in a constant manner