Taking inspiration from something and making something new doesn't count for anything unless you can make it better or cheaper.
I'm not saying apple doesn't copy, because they do. Who doesn't in this day and age?
They did say that it's cheaper, no. That can be a form of better.
Between an unevenly lit screen and unusable trackpad, no magsafe connector and sharp case edges, it doesn't matter what hardware specs are being offered at any price, Asus missed the mark on 2 of the 3 primary means of interacting with the computer. I wouldn't want that computer if it were free.
On the level of a $1000-$2000 purchase, details matter and the Asus Zenbook just fails here. It doesn't matter that it has twice as much SSD space and RAM as the MBA because, I don't want to use a device that has a bad screen and bad trackpad.
As for differently laid-out magnets, I believe Apple's patent is pretty broad, and basically covers any magnetic attachment of a power supply to an electronic device. Supposedly (according to Wikipedia) some Japanese appliances have magnetic connectors, so it's questionable how valid Apple's claim is. I guess the real issue is whether anyone wants to fight Apple over this. And to be fair, Apple clearly put out a genuine innovation here.
I agree that it seems PC laptops should have some way of improving the power connection. The status quo is crappy.