I'll just talk about exclusive games, since anything else I'm likely to play on PC if it runs well.
PS4:
Infamous 2: Second Son.
Everybody's Gone to the Rapture.
Deep Down.
Maybe The Order: 1886, if it offers something more than people with "steampunk" guns fighting "supernatural" foes. Boy, we haven't seen that before. At this point guns are fucking boring.
I don't think Knack will be my thing.
Xbone: Nothing. Seriously. Guns. More guns. Cars. God of War ripoff(Ryse: Son of Rome). Minecraft(After all only 5 million people have bough it on a PC, surely they would want to play it again on the Xbone).