I get the magazine. I am LTG, with and average of around 2,000 SCs per year for the past 4 years. I also do all my intl travel in J and a lot of domestic travel in J.
I think the process may be less sophisticated then many contemplate. On reading the publisher's blurb, I think it could be read that the "top echelon" of WP is a reference to the WP being the top echelon of QF travellers, rather than a spolit within the category.
I know many have speculated about the number of CLs/WPs in the past, and that the number I hear regularly is 45 - 50 thousand. However, allowing for a bit on spin on the part of the magazine (ie making it sound more exclusive - both to readers and, importantly, to advertisers) and allowing for some error on our part, I think the magazine shoudl in theory, go to most, if not all WPs.
I understand that some do not get it, but I wonder if that's random. when QF first released it, they said it would go to all WPs/CLs - not sure why they would have departed from that.
I could well be wrong, but I sometimes think we give the airlines too much credit for sophistication that might not be there.
I think it is very hard to deduce someone's net asset base base don flyign patterns, particularly when most J travellers are flying on the corporate account.