Except Nintendo ...
Also, if we're talking about games from studios Sony specifically owns, you don't get to include titles like Spider-Man, as Sony themselves don't even include it when addressing their worldwide studios. So I'm not sure why you changed the criteria mid-argument.
When did i ever say we are talking specifically about games sony made and owns. We are talking about exclusives. And the bottom line is that when it comes to that not every game that is released is made by the publisher..... but they will publish it and that will usually mean it won't be on another platform. The very same way bayonetta is not made by nintendo but published by them.
It doesn't change the fact that sony has a lot of very well selling exclusives. And they do a lot to make that happen. And they are fine as far as that is concerned.