Seriously, anyone saying Nintendo is lacking online, go play Mario Golf, or Pokémon X/Y etc. Even Mario Kart 8, while having a couple of flaws with online, is fantastic online.
God, I am so sick of the rampant negativity here, and how it snowballs out of control.
Yes, some games don't have online? So what. They don't necessarily need it and would have added to development time. I maintain NintendoLand is designed specifically not to have online and it wouldn't work well on it
Also, yes the Wii U games sometimes disconnect online. That also happens on other platforms. If you're telling me that you have never had a connection error while playing CoD or Halo or GTA then you're a damned liar