I filed -90days (RD: 8/4/2012 and PD: 8/6/2012) before ann date (11/1/2012) and still in Initial Review. You filed around 20 days later than me so assuming if you had filed -90days before your anniversary date your application will be Initial Review. Only people who had filed during these times but after there anniversary date belong to that 30% who are getting their interviews scheduled.
some statistics:
i checked 30 the application number around me (15 lower and 15 higher) and around 70 percent of them are at initial review and 30 percent in testing and interview.