Most of the Apple laptops are barely more powerful than mobile phones. Apple has confirmed this themselves, but tries to spin it as a 'plus' of the phones, when it's actually just showing off how bad the laptops are.
http://qz.com/508313/the-new-iphone-...-as-a-macbook/
Probably because they basically power their laptops with essentially phone SoCs.
http://www.geek.com/apple/inside-the...eries-1617490/
Whereas an ASUS laptop is using PC-grade components, with a very hardy external case most of the time (if you're not cheap)