And as a side note, the keyboard on the Zenbook is actually quite good, and the trackpad issues were fixed with a software update.
Compared to the MBA, the keyboard looks ultra tacky plasticky with all that shiny paint, and doesn't have the right tactile feedback when typing on. As for the trackpad, its not the issues I'm referring to either... just can't compare to the feel of the glass trackpads on Macs.
As for not being so close minded - Windows users shouldn't be either - and once they give OSX a real spin, well...
But just plain hardware build quality/engineering, is something Asus and Samsung hasn't quite achieved in trying to imitate the MBA.