Because Sony doesn't own Atlus and it's not Atlus's job to sell a certain company's hardware? Atlus is there for their own (and Sega's) sake.That's what I'm saying. Why bother bringing out the PS3 version of the game, when you can just simply just bring over the PS4 version & possibly get even more PS4 console sales by forcing people to buy a PS4 if they want to play a certain game?
Besides, the base of the game is the PS3 version, PS4 version's the port.