I dont see a big picture with Xbox One launch titles, as many people say.
PS4 will launch at Day 1 with Killzone Shadow Fall and Knack, against Dead Rising 3, Ryse and Forza 5 at Xbox One.
But its all a matter of opinion, and I'll state mine:
Killzone Shadow Fall have much more potential to hold players than a race simulation game or a single-player focus game like Ryse. Also, Killzone SF is, of all the day 1 titles, the most next-gen look by far. The game seems to have an amazing multiplayer, very customizable, with all weapons usable at the start, focus on a idea of "immediate start playing" and looks pure fun! Also, it seems to have a nice campaing, with more opened large areas, and if im not mistaken a nice ammount of gameplay duration (I think Ive read that would be at about 10 hours).
Knack seems a good and fun to play adventure platform title. A genre that is almost forgotten. Also, Knack is a project from Sony Japan Studio, with Mark Cerny. May be not a very special game, but im feeling it will have its identity and that old school feeling, with a nice modern gameplay and next-gen interactions (like the collectables that can be changed and compared with your PSN friends). In my opinion, a must-buy for PS4.
On the other hand, Ryse is the Xbox One best looking title overall, but majority people who have tried it did not seem to have enjoyed the gameplay as the graphics itself, for what i could read. Also the game is good looking in a general way, but for me, its just special when it comes to facial expressions. Again, Crytek in my opinion is just a graphicist developer company, and in excpetion of the first Crysis, their games are not that special at all, and always overhyped by the history they did with Crysis amazing graphics at 2007 (but also, a trully nice game btw).
Dead Rising 3 doesnt look like a next-gen title. Ok that they put tons of zombies at the screen, and the game looks fun to play, so it will probably trully woth buying. Not much to say here, game looks fun, but ugly... ant its physics seems pretty bad also by the videos I have watched.
Forza 5 looks pretty. Very colorfull, an "art-style" that did not appeal to me in a game that looks to be more realistc, but for sure is looking good. But thats a race game... and cars models, for what I can observe (im not a developer, and have not even all that technical knowledge) is not hard to look that good. I mean... Gran Turismo on PS3 and Forza on X360 already look pretty awesome, and sometimes I think NFS Rivals looks better. But since I did not take a better look at those games (my interest is in Driveclub that was unfortunately delayed) I cant say it for sure yet. But a must buy Xbox One title in my opinion... and I believe will be the best solid experience players will have with Xbox One exclusive launch titles.
Killer Instinct just do not appeal to me in any form. Does not look like a next-gen title, I hated the idea of selling characters one by one (or a pack), and have a very small number of characters at launch. Hope people enjoy it more than I probably would. But here I swear... cant see why the hype (maybe the lack of fighting games at launch).
Thats been said, I still prefer Killzone and Knack (and wait to DriveClub, inFamous, Deep Down and in a more distant future, The Order) then Ryse, Dead Rising, Forza and Killer Instinct. The day 1 titles numbers favour Xbox One, but at long run and a more solid experience I still think PS4 looks more attractive.
Again, bothing that I said is a fact... its just my point of view. Im not trolling.
BTW... thats what I call wall ! lol