Extremenerd, my display NEVER shows a majority, no matter how much I play with phone. With phones I've had in past, yes, display used a lot more. But this phone, cell standby is at the top, always. Unless it's Android system of course. It typically shows, 1. Cell standby, 2. Wi-Fi, 3. Display, 4. phone idle. That's with heavy use. Lots of idle, and Wi-Fi is lower, but cell standby is always at top if it's not Android system.
And yes, on those bad days when I forget to stop background data and play store, even with constant use for 2 or 3 hours, Android system is way at the top, with standby, Wi-Fi, and display far below.