I am reading this and laughing as this happened to me two weeks ago from MSP > EWR due to equipment downgrade. I thought I would have been taken care of much better due to what I thought was a paid F (in my case it was a V-up booked in A, my receipt says A) United could not give a rats A$$ and upgraded 6 others and would not endorse the ticket over to Delta. I have received 2500 miles for the downgrade and that is all. United has refused to do anything else, I have placed the charge into dispute on the credit card and informed DOT. United's response is I bought a V class and received a complimentary upgrade, and that I received what I paid for. The DOT has disagreed so far but still no additional comp from united. If I wasn't so close to 1million miles I would be gone. This is one messed up company.