[megablast]

>I simply timed how long it took the battery to drain 5% with the screen always on at various brightness levels and while viewing an all white or all black 720p image fullscreen in QuickPic.

This is absolutely best case scenario, ignoring all other battery factors.

[jug6ernaut]

Best case scenarios for time, but honestly thats not what is important in these stats. Rather its the % difference between the two. The total life of a cell phone will always be different between devices/users, the % difference solely from the bright/dark difference should stay generally the same. Assuming most of the time is spent going through the UI(which is doubtful tho).