by the end of 2015...some wii u critisizers  are forgetting or dont know that gc in the same period had a big price cut...!!!

Either by the end of its life-cycle or never.

Judging by how it's currently selling, never.

I think late 2016/early 2017. The market is entirely different from what it was in the 6th generation. It is much less frontloaded. I think Wii U sales will reach a high point this holiday, but maintain a steady momentum for the next few years if Nintendo properly times price drops and releases (maybe something like 100k per week baseline for 2015.)

I expect the Wii U to be somewhere around 10 million at the end of 2014.

With average weekly sales of 100k, that would give 42*100k = 4.2mil excluding the last 10 weeks of sales (holiday 2015.) Then maybe another 2 - 2.5 million over the holidays (average of 200k - 250k/week.) Leaving it at ~ 16.2 - 16.7 million at the end of 2015. Then back to 70k average per week sales until holiday 2016, 70k*42 = 2.94 mil. And maybe 1.5 - 2.0 mil over holidays 2016. Bringing sales to 20.62 mil - 21.12 mil (this can be sustained by a price drop to $200 before holiday 2016.) Then maybe another 3-7 million over the rest of its lifetime depending on whether or not it is discontinued early or late 2017. Overall I am going to guess total Wii U sales to be somewhere between 25 million and 30 million.

It won't, you guys should stop dreaming.

To be honest, I still don't see the WiiU passing the GC. Not unless a huge system seller gets announced like a true console Pokemon game.

If the PS4 continues to be a serious threat like the PS2 was, it wont.

We should be discussing whether it will sell 15 million or not first.

It'll hit 15 million next year. 2017 or bust to pass GCN numbers.

The rumored one big game a month system for the Wii U will really help it next year.

I'll be sad if Wii U passes the GC... the GC does not deserve the distinction if being Nintendo's worst selling console. The WIi U does.