First, this is about resolution and not the size of the screen. Second, Apple has managed to give Retina Macbook Pro a 7-hour battery life despite it's screen.

First, this is about resolution and not the size of the screen. Second, Apple has managed to give Retina Macbook Pro a 7-hour battery life despite it's screen. Third, the article states that "Sony, Asus, and Lenovo all have notebooks at similar prices".