"an Alienware-grade gaming machine"
So overpriced and nowhere near as good as fans would like everyone to believe? I can certainly see why you suggest Apple would be worried by this, MS are apparently copying their business model.
On a more serious note, it looks pretty good. The main concern I have is the hinge, since I have yet to see one that wasn't unbelievably shit. Asus have generally been the best for that, but even their Transformers just didn't have a reliable or robust locking mechanism and hinge. And while that's a bit of an annoyance when it's just a keyboard and battery, what's going to happen when your GPU keeps getting dropping out due to an unreliable connection?