Let's see. Product X comes out with functionality A. Product Y comes out with functionality A, B and C. Product Y is therefore a clone, because it offers a superset of the features?

But hey, let's apply your argument to the iPhone itself. You see, the iphone is a clone of the LG Prada, since the Prada came out months before that and the iPhone offered the same thing... Believe that doesn't make any sense to people without an Apple fanboy mindset.