As far as Pachter can tell, Titanfall is poised to sell between 6-10 million based on critical reception. He thinks the title will end up with no less than an 80 Metacritic score, which would land it at the low end of his projection. If the title soars into the 90′s, it’s likely we’ll see near 10 million in sales. His exact quote:
"My best guess is 6 – 10 million units, depending upon the game review scores. If it gets above a 90, it will likely be at the high end of that range, below an 80, at the low end."
Furthermore, Pachter is confident that EA is expecting sales in that range.