Soundwave on 04 February 2015
The main issue Iwata cited in this example was that porting from the Wii U/Wii and 3DS was extremely difficult because they are completely different CPU/GPU structures.
My guess is porting from Wii U to Fusion will be much (much) easier.
I think Nintendo can ask AMD if they can make a mobile chip (ala Mullins) but instead use the Wii U's architecture design as the basic blueprint.
Throw in software dev kits designed to allow for easy Wii U-to-Fusion porting and voila, you probably have in the end something that's easier to port between those two than PS4 to XBox One porting is (which every 3rd party deals with with no/minimal complaints).
