How much will the gap be closed in September alone?

[Slimebeast]

Slimebeast said:

- The 5 week month of September will sell between 1.0-1.1 million PS3's worldwide and ~750,000 X360s (not necessarily supported by initial VGC data)
* it's a 5-week month as defined by NPD

 http://www.vgchartz.com/forum/post.php?id=2527933

Gap decrease ~350,000.