Question @OP. Did Nintendo release Xenoblade on the DS? Twilight Princess?
Nintendo is making games on the WiiU that would never release on their handhelds because they are targetting different audiences. Even if Nintendo doesn't directly compete with Sony and MS, they have a market of their own to reach on the WiiU that may be similar to the DS/3DS market but is not the same. Or even if they are very similar in population, their tastes are being catered to very differently.
This thread is based on the idea that there are only two markets, the DS market and the PS360 market.
That is bullshit.