Originally Posted by
UA-NYC
Given the reference to biz/first on UA, guessing he/she is referring to int'l flights only.
UA makes it easier/cheaper on pax to make sure C/F go out as full as possible, CO less so
Not following this...

CO has SWUs, CO has mileage+copay upgrades (same as UA)
Space available, CO will upgrade those on the waitlist
There is a difference in cash upgrade policy, is this what we are talking about??