This is interesting device with classic design, and for a price of $450 or less it will have a demand as less expensive alternative for $650+ of Win 2, but it's not exactly the Win 2 killer since its specs are lower (not counting HD display), it has no keyboard, it's less portable and I'm not sure how can it support SSD extension? Detachable joysticks mechanism may provide an interesting upgrade options, if there would be ones.
But, as I've seen on Youtube, they're looking for licensing their product for a some companies outside China, so I really doubt this thing will cost even $450. Well, if they will find the way to avoid the court actions from Nintendo...