So using vgchart numbers which seem to be close enough and this new info, we know:
Days | Sold |
2 | 1,118,065 |
9 | 1,523976 |
18 | 2,000,000 |
That means it's third week was comparable to BF, or maybe a bit less than 405,911. Keeping this up means it should just reach 3 million by the end of the year. That's really great and would put it 700k ahead of the Wii U's first year, or 30%.