Put I like this with people anticipating third party titles. Blockbuster titles. Games that never touched the wii system. Hypothetically, do you think that Nintedo can sale Mario if Modern Warfare was released on the same day. The Mario franchise will take a big hit. Not to mention if more third party companies relaease their blockbuster titles at the same time. Let's be honest this is why their making the wii u; for more mature gamers. If it were all about keeping it's base, they can just stick to the wii. But to but a next generation Mario on sale against all the third party blockbusters( which is what every one has been waiting on) they'll have to get a little violent don't you think. I love Mario, but if Battlefield was realeased the same day, I'm going with Battlefield. Plus I'm pretty sure alot of other gamers who are waiting more third party from nintendo are going to do the same thing. Therefore, Nintendo may see software sales lag behind third party blockbusters......eventually passing Mario a gun to shoot their way back into the competition....face it the are going to have to ramp up the gore a likely bit.
You may prefer Battlefield 3 over Mario on the Wii U, but there are millions of others who beg to differ. Even if a Mario game and Battlefield 3 (both of which have not yet been confirmed) were released on the same day, the Mario game would still sell more. Third-party titles tend to perform less on Nintendo's platforms (sadly), and Battlefield 3 will mostly likely be no different if it doesn't offer anything drastically new. A lot of gamers already own Battlefield 3 for other platforms, while the next Mario game is a whole new experience.