Wii U is now 1 month old and has sold 1.8 million units. How is it doing?

[runqvist]

HappySqurriel said:

runqvist said:
As it should be selling more than its predecessor, it is doing bad at the moment and in following weeks it will be doing even worse.

How many consoles have launched in November and sold more than 2 million units before years end?

From my understanding, I think the only system to have sold more systems at launch than the Wii U is the Wii ...

So which console is the predecessor of wii u? It is the console to make comparisons. What is it?