Well, even since the PS1 era, Sony has been successful in said genre. Even when Square Enix decided to go multiplat early on, along with Tales in the form of Zestritia, games like Folklore were a good reason of the success that PlayStation has had historically.
For me? BloodBorne was to be a hit. Persona 5 will transcend 4 in many ways how I see it. The X/X-2 remaster is coming, along with the VII 'remaster. In addition, there is Witcher to get excited for as well. In addition, we should hear more from Guerilla Games about 'Horizon'. All in all, I think the PS4 does have a bevy of great RPG titles that will come out this year.
" It has never been about acknowledgement when you achieve something. When you are acknowledged, then and only then can you achieve something. Always have your friends first to achieve your goals later." - OnlyForDisplay