"Taking the affected clips and running them through our performance analysis tools, we expected the results to show clear frame-rate drops and small bouts of tearing, but surprisingly this wasn't the case at all, with the results showing us a largely locked 60FPS bar one or two minor dips and a solitary torn frame. Furthermore, when seeking through the footage in performance-affected areas we were confronted with unique frames on a consistent basis, thus indicating a 60fps update that we just didn't feel when playing the game.
So just what is going on? Well, a close look at our captures reveals that Call of Duty: Ghosts actually runs at higher frame-rates than 60fps on a fairly frequent basis, despite the video output being limited to 60Hz"
PS4 vs. XBO comparison by anand tech