you basically listed all Playstation exclusives since... forever?
Magicka 2 - sequel to PC exclusive game.
Arcania - sequel to 3 PC exclusives; remake of a PS3/360/PC game.
Onechanbara - had entries on PS3/360/Wii last gen.
Risen 3 - original was PC/360; sequel was PS3/360/PC.
Nobunaga's Ambition - has released on pretty much every platform under the sun.
Samurai Warriors - went Nintendo-exclusive for a while (Wii then 3DS)
At least if we're saying things like this, make sure to do a little research.
OT: Everyone else has basically covered it but niche stuff will likely target the best userbase. Ease of PS4 development compared to PS3 helps. PS4 has a stronghold in Europe so anything targeting that audience (i.e. ARPG's developed in Europe) will likely go exclusive. Same with Japanese stuff.