Is possible, I think 3 milions is more reasonable.
But please can we stop with this threads? If the game ends up selling 2 milions it would be a success but it would look like MEH, and many people will use this predictions as a weapon. FW numbers can give us a more clear view of this, just wait until we have those numbers before making this risky predictions.
Between all this predictions "1 million in a month" then "1 million in 3 days", then "4 million lifetime and we don´t even know fw sales", you guys are making it so easy to be dissapointed when even 2m would be a huge surprise just 1 month ago.