As I have seen written somewhere else, it makes sense that this was the IP that Platinum had to give away in order to have full control over Wonderful 101.
I mean, Platinum could have sold off it's share of the IP to Nintendo, but given how well the game has sold so far, the first hypothesis makes more sense to me.
My (locked) thread about how difficulty should be a decision for the developers, not the gamers.
https://gamrconnect.vgchartz.com/thread.php?id=241866&page=1