Not all Wii U games need to be in glorious, full-blown HD - Iwata

[Soleron]

"However, he thinks there are several franchises that will benefit from Wii U’s HD capabilities, like Zelda. "

On the contrary, Zelda could hugely benefit by scaling down costs with a 2D installment. Would easily sell 5m and be more profitable than an HD 5-year-development time game selling 10m.