Lenovo Yoga 2 Pro vs Apple MacBook Air?

I'm stuck between these two ultrabooks. Both will have an i7 Haswell Processor, 8 GB of RAM, and 256 GB of memory. Now, I will be using this notebook/ultrabook near daily for school. It obviously has to be sturdy and light, which I know they are. But, I will also be doing light video and music editing and some light gaming ( Like Counter Strike: Global Offensive and Civilization V ). Which would be better for me? Both seem like excellent machines.

First of all they do not have 256gb of memory
the lenovo is made out of plastic, while the macbook is made of aluminium
but for gaming windows is the best
plus, the lenovo doubles out as a tablet
ill choose lenovo

MacBook Air