Well the only fps on ps4 was like destiny o_o; and that's more of an mmo, oh and battlefield? I mean there were like 25 free to plays and like 15 were just rpgs, maybe you missed stuff?
Free Step Dodge
KidArk
Force_of_Nature
There was also Far Cry 4 & Battlefield Hardline, but yeah there were too many FPS's and not enough interesting and unique games.
Aerospark
Dragon Age: Inquisition, The Rise of the Tomb Raider, Mass Effect 4, The Division, Rainbow Six, Destiny, The Order 1886, & Little Big Planet 3 were literally the highlights of E3 for me. Everything was just ugh, not interesting. :||||||||||||. It felt like the year of FPS this time around.