Destiny boosted PS4 sales in Japan to 23k despite also being available on PS3 which has a massive install base.
Mario Kart 8 and Hyrule Warriors despite being huge Wii U exclusives boosted hardware sales to 18k.
Now, lets not consider XB1 since it has a very small install base in Japan. So we can consider FF Type-0 HD as PS4 exclusive in Japan. Now the original released in 2011 so its bound to hurt some sales. However the new one looks like a huge improvement over it and it shall easily sell more PS4's than a cross-gen multiplat new FPS IP like Destiny.
Bloodborne will sell to the Souls fanbase, around 300k of which are in Japan. Many of them are likely not to have a PS4 yet so will buy one for this game.
Metal Gear Solid 5: The Phantom Pain will sell many PS4's as well in Japan as it also has a special edition. On top of these games consider all the other multiplats and exclusives on PS4 releasing in 2015 and it all points to it selling better than Wii U.







