I don't think it's outright impossible, but seems unlikely... I really don't think it's going to happen though. That's a pretty lofty goal to match their absolute best selling FF games. In FFVII case people who didn't even play RPG's got the game.
TBH I'd be willing to bet that FFVII Remake may be more likely to reach 10. It had, by far more of a reaction then anything FFXV related. It will be interesting to see how the two games do.
If they do sell 10 then good for them... but 10 to be successful... That just sounds worrying and set up for failure.







