Can Splatoon sell more than FFXV in Japan?

[m_csquare]

I really don't knw what to say abt this. By feb 2016, the biggest selling ps4 game in japan, MGS5, only managed to sell 430k units. Source: http://kotaku.com/the-biggest-selling-ps4-games-in-japan-1760053178

and this was MGS5 comg preorder number a week before release date: http://gamrconnect.vgchartz.com/post.php?id=7494839

so despite what everyone says abt FFXV preorder, FFXV still looks better on paper (or at least in comg) than any ps4 games out there. At the same time, I have to say 1m sales seems like an impossible mission for any ps4 games. Maybe in lifetime sales, ffxv can beat splatoon, but right now, i;m just doubtful