I have unfortunately (or not...) flown alot of Express flights so far this year, on flights where upgrade was a possibility, I have been upgraded on 3/6, so 50% isnt too shabby I guess...
On one IAH-AUS I was 20something on the list... havent seen my first initial and first three of my last name that far down in ages... I didnt pay attention to the fare class, it must have sucked... haha