I've been tracking the Android battery usage of my Skyrocket and Moto X. Every evening after 10:00 I navigate to Settings / Battery and screenshot the overall usage and the highest element.
Now that I've got some time under my belt with the Moto X I had the feeling that its battery usage was much better than the Skyrocket. Since the time off battery will vary from day to day I calculated the % of battery usage per hour.
Just as background, the Skyrocket was running Ice Cream Sandwich and the Moto X was running KitKat. I upgraded from 4.4.2 to 4.4.3 in the middle of this period but I can't tell that it made any difference.
While the chart was interesting...
While the Moto X was clearly better than the Skyrocket it was all over the place.
I think the best way to look at it is a simple average.