And within the same status, the fare should rule, and beyond yet not even our FT superstition has a clue how pax are sorted. The old candidates for deep sorting are lifetime miles, year to date miles, time added to a waitlist which doesn't exist anymore etc.

And that is all if the system remotely works as predicted. It seems to have numerous flaws currently. Such as listing your upgrade as "denied" before the UDU window starts or, more recently, as "not eligible for upgrade" without a reason given...