Surface Pro 3 - How the heck is this thing so thin?

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via mobilitydigest.com

Seeing this comparison to the iphone 5S really made the device seem insane to me. Sure, it's larger screen size than before, but the weight is down (I think), the battery life is better, the aspect ratio makes the device a little easier to handle, and it's really just all around better. Currently using a Surface RT as my daily device, and I miss being able to play steam games... if this thing could handle some 2012 or earlier games @ 1080p on mediumish settings, I would be in.