Splatoon it's been selling pretty good for many weeks so wouldn't be surprising if can top 1 million. Now unless FF is uterly shit I don't see it doing less than 1.5m, even 13 sold almost 2M and that's on a console without kingdom hearts and dragon quest.
On the other hand if it releases on this new nintendo console, who knows? maybe hurts its sales on ps4 and splatoon wins? it would be fun xD