Well I think Pikmin has a lot of things going for it that could lead 2m+ sales.
1. A long hiatus. Look at games like Prime. Metroid games have never sold that well, and when Metroid took a generation hiatus, it came back with the biggest sales of the series.
2. No real first party competition. This is the biggest first party game. There is no 3D Mario, no Zelda, no Metroid, there is really nothing besides NSMBU. I don't think a lot of the core nintendo base has jumped on yet, and Pikmin is adored by the Nintendo faithful.
3. The first 2 were excellent. Pikmin 1 and 2 are some of the best games Nintendo has put out. They are unique, beautiful, challenging, and quite fun. If the third is as well received as they were, then there is no reason it can't sell well.
I really love Pikmin, I bought my Wii U in anticipation of Pikmin. It's one of my favorite franchises out there, and I am overjoyed that it is finally getting a revival.







