Just because it uses a dual chamber GPU/motherboard design under 10-liters, and it has larger CPU cooler clearance and an optional top chamber or "Top Hat" like the Ghost does not make it a mere copy. There is a bit more going on here that you are willing to admit. So for the benefit of all, I will let the photo speak for itself with these visual annotations highlighting just a few of its differences:
You know, if you remove the removable feet and lose that additional line, and swap the color on the top cover, it looks barely distinguishable.
Your comment only solidifies my argument of how specific the differences are.