Mr Kapadia, Most of us here have done an extensive analysis if train bookings and WL progressions. By looking at passenger trend, one can analyze whether a particular WL shall get confirmed or not.
.
When I advise for PQWL will get confirmed or not, I also check how many berths are currently vacant in GN quota.
.
I...
more... check whether the travel is in the last lap of the train. For example, in one of the PNR queries, a passenger has booked WL tickets in AC3T from Bhopal to New Delhi in Karnataka Exp. I am very sure this ticket will get confirmed, not just this low WL, but even with as high WL number as 20. There is a logic for this which I know, thats why I am sure abt this confirmation.