3DS has a much better library of games for me. It helps it was supported longer and being the market leader for handheld means better third party support than WiiU too. 3DS by a landslide for me.
WiiU did have some gems like Mario Kart 8, 3D World... but they're all games I wish I didn't have to turn my WiiU on to play, and now with the Switch I don't have to.







