I've found almost the reverse. The games are limited on the PS4, Killzone looks great as a tech demo but the game play isn't great. Resogun is fantastic the best game on PS4 so far. PSN+ is a great deal with the free games, Don't Stave this month. All the other games are available on other formats. I think the best game on PS4 at the moment is the free to play War Thunder beta (just void the pricey paid elements!).
I still find Xbox live more accessible and intuitive. The ability to snap the TV screen in screen is a great bonus too, I'm surprised how often I'm using this - usually for live sport in the corner while I play a game. As for games it all depends what you like but the of the One exclusives Forza 5 is an excellent racer that is getting better with each patch and DLC pack. Dead Rising 3 is zombie bashing fun, especially with the combo weapons. Ryse is surprisingly playable, better than the reviews suggested.
Whichever console you chose I think the current must have games are:
Assassins Creed 9/10 - so well balanced as an exploration/stealth/fighting game.
FIFA 14 9/10 - oh wow does it look good on next gen.
Forza 5 9/10 - [One only] the visuals, improved handling and endless hours of entertainment for sim racers that is just getting better and better. The 'ring DLC will make this a far more complete game. Superb new force feedback model through the Thrustmaster wheel too.
Resogun 9/10 - [PS4 only] space invaders re-invented, tests your reactions and concentration to the limit. I'm rubbish at it but I still love it all the same. Addictive and best of all free with PSN+.
Battlefield 4 8/10 - great multiplayer battles but still a little unstable at times. Looks stunning on next gen and on PC it's the most lifelike game I've experienced to date.
Xbox Fitness 8/10 [One only] - the Kinnect sensor is at it's best with this 'game', it detects body motion, effort and heart rate surprisingly well. In any case I find exercising with Tracy Anderson quite motivational...
Deadrising 3 8/10 - zombie bashing fun and who doesn't enjoy a bit of that from time to time.
COD Ghosts 7/10 - good single player campaign, the twitch multiplayer style doesn't suit me, I much prefer Battlefields tactics.
Need for Speed Rivals 7/10 - so fast your eyes will bleed, just feels a bit too much the same as the earlier NFS games, good all the same and brilliant tablet link for overwatch - where you can help or hinder other players.
Ryse Son of Rome 7/10 [One Only] - surprisingly playable hack and slash game both in single and co-op online play. Looks superb.
Killzone 5/10 [PS4 only] - stunning visuals but the game play is strange, feels like an early PS3 game in that respect.
I'm yet to try NBA2K14 but I'm told that is also a quality game.
All this adds up to good reason to move across to next gen for me and there is plenty more on the way soon. The good news this time is that both consoles are good and PC gaming is also booming. It's a good time to be a gamer.