Let's think about how to mess this up.
NX will be released as a handheld with with 540p screen and Tegra3 chipset for 250$. This device will be too weak to connect to a TV, so we need a dedicated home console and Nintendo overclocks the WiiU to 1.5x the power (like Gamcube to Wii), because it worked so well in the past. Home console will be 350$. Cross releases will take month, if at all, and you have to buy both versions. The WiiU will be discontinued except for some shovelware to milk the remaining customers. Amiboos everywhere.