It'll be between Pokemon and Dragon Quest. Remember, Dragon Quest XI is an anniversary game paying homage to old and new school gamers. To put things into perspective, Pokemon X and Y sold 4.32 million in Japan according to VGC and Dragon Quest IX sold 4.35 million according to VGC. It's gonna be close. Yokai Watch 3 won't surpass either, although it'll do well. Monster Hunter will do amazing but not on either DQ or PKMN's level.