NeoGAF acknowledges that the Wii U had a fantastic year, but I believe it deserves even more recognition when you actually think about it. The Wii U didn't merely have a year with good exclusive games; it had a year where its best games, can be considered the best ever in their respective genres.
I thought about this when I was remembering the threads I've made this year since I got a Wii U. I said that Tropical Freeze was the best 2D platformer of all time, Mario Kart 8 is easily the best Kart racing game I've played, and having just finished Bayonetta 2 for the second time, this is the greatest character action game ever. The picture above also includes Shovel Knight, which I haven't played yet but will soon, but based on the kind of praise I've seen, this could be considered the top indie game out there.
Many platforms have had damn good years, but it's hard to see a year where you are getting simply the best of the best and in a variety of genres/styles/gameplay/etc. Let's not forget about Smash, which will probably be the cherry on top of the cake.
In short, Wii U has an excellent library that doesn't include merely good games like other platforms; it has what can be considered the best of the best.
Discuss.