Good reviews and word of mouth will do the job fine I think. Sadly, the game will be undershipped by Nintendo which means *urgh* more sales on the digital side ... (Good news on an objective perspective !)
Btw, thanks for the chart Axum :D
Here's hoping Daemon x Machina will finally get into the Top 10 in it's final month !
I'm buying it day one at retail and hoping for the best (sales-wise, anyway, Platinum is pretty reliable in the gameplay department so I'm not worried there). The big winner this month will obviously be Madden 20.