I honestly think it's under tracked by 100-225k. It's been above cod(x1) for weeks on amazon, bestbuy, and gamestop. Frank o conner(guy in charge of 343) has even said it's been pre-ordered very well. Phil spencer said today or yesterday that he thinks the game will sell "significantly better" than halo 1 cea.
For the past 4-6 weeks it's been very very high on the amazon, gamestop, and bestbuy list yet vgchartz has consistently had it at the 1-2k range. Also it's 86 on the amazon best seller list on the year yet vgchartz has 11 games ahead of it while none of those 11 games have sold better than it on amazon.
Halo MCC will sell 5+ million copies(including digital)
halo 5 will sell 10 million copies(including digital)
x1 will pass ps4 in USA, and UK.
