I definitely prefer the Wii U's lineup, even just looking at the games currently released.
For me, my favorite games on the Wii were the Galaxy games, Super Smash Bros. Brawl, Mario Kart Wii, Skyward Sword and Kirby's Epic Yarn. I haven't played the Wii version of Xenoblade Chronicles but it's not too different from the 3DS version, so I can add that as well. I'll top the list off with the Metroid Prime Trilogy. All great games.
In contrast, for the Wii U I've loved the Bayonetta games, Pikmin 3, Splatoon, The Wind Waker HD, The Wonderful 101, ZombiU, Donkey Kong Country: Tropical Freeze, Hyrule Warriors and Captain Toad: Treasure Tracker. I prefer 3D World to the Galaxy games, Mario Kart 8 to Mario Kart Wii, Smash Bros. Wii U to Brawl. Not to mention the upcoming games that I'm looking forward to such as Fatal Frame V, Super Mario Maker, Yoshi's Woolly World, Xenoblade Chronicles X, Star Fox Zero, Genei Ibun Roku #FE, Pokken Tournament and of course, Zelda U.
In short: I enjoyed the Wii for what it was, but despite its smaller library, I do feel that the Wii U appeals more to my personal taste.








