In the end, for the most part it comes to down to games, what are these systems without games anyways? Sony have stated that PS4 already has dedicated studios for 30 exclusives, 20 of which will be released within a year of the PS4's release. If history has shown us anything then it will be that Sony will release the more exclusives which span across the board in terms of genre whereas MS's exclusive range was mostly FPS's.
People should buy the PS4 anyways after the stunt's that Microsoft have pulled. All corporations are in it for the money but Microsoft never seemed to have the average gamer in mind until they knew they were heading for disaster. To avoid getting fucked over after you've bought the console I'd play it safe and go with the PS4.