Originally Posted by RNE
How can we determine if that's the case?
Your experience proves it... there are routes, particularly transcons out of EWR, where Plats rarely get upgraded. I'm managing 0% to/from EWR, 33% to/from IAH and 100% to/from CLE as Gold. (Caveats: the IAH sample is much bigger (21 upgradeable segments), and I fly off-peak, so I'm sure there are others with worse records.)