I very much doubt the initial assumption of the OP that sales of Zelda HD would be 3 million on Wii U. That would be pushing it even if the game were Wii U exclusive, but considering if it were also released on NX I think it would struggle to make 2 million. So the NX would have to find 6 million plus. Not impossible, but obviously it would have to really take off and I'm not prepared to make such predictions about the NX.







