Agree - you will never get the details.
A Perceived Customer Value will be an esoteric mix of all sorts of things. Amount spent on flying may be part of it, but perceived profit on the amount spent is much more likely to be what is considered. Someone dropping $15K on a return J international flight may be perceived as more valuable than some spending $15k on 50 round trip domestic Y flights. On the otherhand, someone spending $15K on return J domestic flights may well trump a one-trip international wonder.
Status - and how much spent on QF vs alliance members, and then all manner of other things that could be indicators of value could possible be factored in. Someone who churns millions of points from CC sign ups and then spends them on toasters might be perceived to have high value. CL probably figures in,
CIP on the boarding pass really means someone a travel agent who can insert that in the booking wants to keep coming back to them - means nothing to the airline.