Your experience may be specific to your location. STX is a leisure-heavy destination and with that comes leisure passengers who may be willing to spend that $100 to upgrade.
As a lowly Fool’s Gold (Gold obtained through status challenge so I have negligible LPs) I’ve found my experience to be the opposite. I’m always on the bottom of the upgrade list (rightfully so as my 12-month rolling LPs is close to none, so it puts me behind all over Golds), yet I seem to get upgraded more often than not.