Over thanksgiving I had the pleasure of hanging with Sui & he had both the PS4 & XBone..
I like them both very much.. if I had to lean on one over the other its going to be hard - I will have to say the XBone won this duel for now.
XBone - The UI is what really won it on me for the weekend.. not the games BUT..
Killer Instinct; FUCK YEAH.. played hours & hours with my brother & it didn't take long before it was just like when we were kids again pulling out 20-60 hit combos. Love me some KI & they have a great base for the rest of the game to be dropped into place as they complete it.
Deadrising; <3 - We combined a motorcycle with a steam roller & flame throwers.. best vehicle in the game? Try it & see if you don't think so. We also made ourselves a light saber which was pretty cool (& cheap/easy lol) but suggest getting the sledge + car batteries.. shit hits like the sledge hammer but then sends out AOE chain lighting to surrounding zombies....... AWESOME!
Forza; is a good racing game & looks great, etc. BUT I am biased as my favorite racing series is the GT series & I cannot imagine what the GT series will look like on this gen of consoles.
Resogun is pretty fun.. did enjoy that.
Did you try Warframe for the PS4? Yeah I know you can get it for the PC but it ran really well & looked amazing on the PS4. Not a PvP game but definitely a good CO-OP shooter type game where you can fight as a squad of friends while on the grind to customize your shit how you like it.
Its funny you didn't like Knack but I can understand.. its definitely a kids game. I actually spent most of my time playing Knack with Sui's 3 yr old & we beat it a couple of times. It is kind of fun for what it is.. what I truly enjoyed out of Knack & where I will say that PS4 won over XBone on graphics.. I know you are likely thinking Knack doesn't look like a hardcore graphics kind of game with its cartoonish/child like nature BUT BUT BUT..
Get to the final level of Knack.. when you can get him to be FUCKING HUMUNGOUS.. like this absolutely fucking gigantic Knack - just look at the amount of polygons, pixels, etc. just on Knack.. not including the rest of the world & things going on around you.. but just the polygons on Knack.. simply fucking amazing. Ran with 0 hitches, hang ups, frame drops, etc.
Just fucking wow & amazement on the PS4.. PS4 hardware > Xbone hardware for sure