I'm not surprised to see Liverpool lose. Some time before the UCL final, Liverpool were faced with 3 competitions that were close to each other, not easy, but Liverpool went through it one by one. Out of 3 competitions, Liverpool have win the FA Cup. By the way, in the EPL I still feel Liverpool are much better than City, yes even though they are 2 points behind in the EPL. But in other leagues, for example UCL, Liverpool are better than City.
Both Liverpool and City are big teams with good players and great coaches. It is hard to tell which one is better whether in EPL or UCL.
In EPL, although City won it but 1 point difference and a couple of goals more won't make City way better for sure. In UCL, although Liverpool played the final game, it failed to score while City was eliminated previously by the same team that beat Liverpool which is Real Madrid which made a great comeback and City scored in both legs. I find any comparison between them in social media or here, based on emotions rather than anything else