I had a chance last year to fly UA F from PDX-ORD-SJU and back via DFW. I found those domestic F to be pretty similar to AS, with the exception of the A321 I was on from PDX-ORD. That seat sort of rotated as it reclined and I fell right asleep. But online reviews suggest I am not in the majority in my opinion. The food was ok, not bad and not remarkable. The service was just fine. I did like the baggage tracking in the app, and they did hold a connection for me and several other passengers on the connection in ORD.
At the end of the day its pretty subjective, and for my colleagues its really all about networks. I am in a spot where AS serves everywhere I go. But if I were in another market, who knows....