There is no comparison between PS4/XONE and PC, the main reason is that games for consoles are optimized for its hardware, as all console have only one hardware setup, it is very easy to extract the maximum perfomance. A chipset based on a GTX 750 Ti in a console for example, may easily beat a GTX 750 Ti in PC for the same game. Because in console that game was optmized for that GPU and CPU especifically, which is much different for PC games, PCs are all different, so producers need to do a more basic optmitization so everyone can play.