I think "PS4 Console Exclusive" = Third party exclusives that may or may not be ported to PC/Mobile/Arcade , the Sony contract probably just states that PS4 is the only "Console" it can appear on. So Sony is just playing it safe and saying PS4 console exclusive on the box.
"Only on Playstation" = Sony IP, never coming on anything else apart from PS.
It makes sense that stuff like KOF14 , NiOH and Yakuza are labelled "PS4 console exclusive" because their contract with SNK,Tecmo,Sega probably allows to to release on PC. But it is still up to those devs whether they do it or not.
It isnt a Confirmation of a PC release sadly