NoirSon on 30 November 2015
It will depend on how well Nintendo advertises it outside of Japan. If they are smart, which at times is questionable, it get a moderate advertisement push that will draw not only the hardcore fans already aware of it but causal fans that would like to see it and get over 1.5 million easy.
If they are dumb and for whatever reason don't push it or even go as far as to try to bury it with a digital only release or something like that, then they get what they deserve.
