I agree with you on Arsenal, I don't see them going far again. Already had a beavy defeat vs Liverpool. Let's wait and see though.
so far manchester united very well because they are still getting the opponent which is not too difficult. but let's wait when manchester united meet another great team.
as far as I can see Liverpool are very good, especially when they beat arsenal 4-0, Liverpool is the candidate champion, but if they are consistent because Liverpool sometime always play badly when against bad teams.
Liverpool is very lucky because I think Arsenal is the wrong strategy to deal with it. so Liverpool can win the game with a fairly hefty score. Hopefully, Liverpool can maintain the consistency of games like this in every game.