I agree that the comparison did not show the differences between LOT and PBS bidding and all that one can do with each system, nor did I get any sense that it was trying to do so.

What I've gotten out of this conversation, though, is that a FedEx pilot gets exactly 6:00 per vacation day, regardless of how he chooses (or has the seniority) to use it. Through bidding, he can expand his days off well beyond what is typically possible through PBS, but at some point he will have to make up the difference or lose $$$.