Just solely going by exclusives and what I liked...
Yakuza 3 to 5, The Last of Us and Uncharted 1 to 3 (though no one likes the first one) were top exclusives that have been remastered on PS4 (and in Yakuza 3's case, has its removed content put back in).
Metal Gear Solid 4, Yakuza Dead Souls...