So im looking for my next hit but i can't decide i will probably buy all the games i mention eventually but i want suggestions from users that have these titles.

For the wiiu im looking at:

Mario Kart

Pikmin

Bayonetta 2

Mario world

For the ps4:

Witcher 3

Dark souls 2

Dragon age

Diablo 3

For Wii U, I would rank the titles as:
1. Super Mario 3D World
2. Bayonetta 2
3. Mario Kart 8
4. Pikmin 3

But it really depends on what genre you're craving. The PS4 games are a bit easier to compare.

Easy.
Ps4:TW3
Wii U:MK8

Wii U: I'd say MK8

PS4: I would say DS2, but I heard it that Scholar of the First Sin wasn't that great of a re-release. I'd have to say Witcher III.

PS4: Dragon Age and the Witcher 3

Wii U: Bayonetta 2 and Mario World

buy MK 8. it is the best game on Wii U by a wide margin imo.

For Wii U, I'd recommend Mario Kart 8

Mario Kart
Well this is IMO the best Mario Kart game ever. It is fantastic with amazing DLC.

Pikmin 3
I've only played the demo on this but I love the Pikmin games. I have been waiting to get this one due to the price being so high right now. I suggest waiting for the price to at least be normal again.

Bayonetta 2
Right now you can get this game for like $45 at Gamestop and Amazon. Plus... you are getting Bayonetta and Bayonetta 2. Two games in one. I would definitely get this first. Great opportunity.

Mario world
I have never really been into Mario games honestly.
But this game sold me on it. This game is fantastic in every way.

In the end, it is your choice. Get whatever is calling to you right now... a racing game, a platforming game, a strategy game or an action game. All are amazing.

Also, I would just like to note if you don't have them yet, you should consider The Wonderful 101 and Monster Hunter 3 Ultimate. Both are very cheap right now and I think every Wii U owner should have.

Witcher 3 on PS4 easily.

MK8 on Wii U.