Eh, PS4 has had the backing of pretty much every major Japanese publisher, it basically only lacks Yokai Watch in terms of big Japanese IP.
Well, they had to choose between the PS4, a dying and worldwide unsuccessful Wii U and the in Japan dead-on-arrival Xbox ONE. For Japanese developers who wanted to create home console games for the Japanese market, the question was less "who's the best one?" and more like "which one sucks the least?".
With the Switch being both a handheld and a home console and on top of that very successful both in and outside of Japan, I'm pretty sure that the Japanese developers are slowly Switching to Nintendo right now, unless the game is too demanding for the Switch.
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454
The Steam/GOG key gifting thread: https://gamrconnect.vgchartz.com/thread/242024/the-steamgog-key-gifting-thread/1/