I haven't owned a console since the Megadrive/Genesis. Consoles these days just don't have enough games that would appeal to me to make it worth the purchase price.
This list is probably a little outdated, but it looks like the PS4 would have a slight edge for my (admittedly weird) taste in games. Of the few I would be interested in playing, most of them appear in the middle column. Stuff like Watch Dogs and Star Wars: Battlefront 3 are available for both, but then PS4 also has Infamous Second Son, which looks like good fun. I guess lately I'm more of a casual gamer, so open-world, sandbox-type games have a reasonable appeal, but even that would be short lived.