you are suggesting a mostly insignificant chip delta is going to give someone an almost 70% battery life increase, or are you just throwing forum hyperbole everywhere.
iPad 2 was manufactured using two different Apple A5, with no way to tell which you would get without opening the box.
Here's how it affected gaming battery life:

Almost two hours better battery life.
And,
Geekbench Battery test is designed to measure the battery life of a device when running processor-intensive applications (such as games).
Last edited: