Where the Wii was one of Nintendo’s biggest, money-printing successes of the modern era, the Wii U was something of an ugly duckling. I’ve heard various reasons for its less-than-stellar performance; casual gamers didn’t see the point of the expensive game pad, and hardcore gamers had been alienated by the Wii’s family-friendly vibe. I also heard that some people didn’t even realize it was an entirely new console, believing it was just a peripheral for the Wii they didn’t need.
from GameVerse