Why didn't Nintendo make more realistic, violent games for the Wii just to prove 3rd parties wrong?

[AndrewWK]

MrT-Tar said:

AndrewWK said:
You can say whatever you want and deny it however you want, but games like Bioshock Dead Space Bayonetta or The Witcher don´t sell on the Wii.

I don't think anyone is denying that.  With the exception of Dead Space (albeit being a good, but not great, on-rails spin off) none of them released on the Wii

What about MadWorld and Red steel they did not sell really good.