Well I don't quite get you, but I feel Manchester United is also doing well and moreover it's just last season that arsenal started being quite successful and also I feel that success they even achieve was a bit kind of disappointing because I never expected them to lose on the trophy after being top of the league table for so long and at the end they just gifted every thing to Manchester city
I personally did not expect how it could be successful but disappointing because for me, even though Arsenal failed to win the trophy but I personally was not disappointed at all with Arsenal. Because anyway, I just accept and acknowledge the fact, that Manchester City are clearly better and deserve to win the trophy because of their ability to be consistent. However, at least Arteta has managed to improve Arsenal ability last season and also for next season. At least I also still believe Arteta still has the ability to be able to make Arsenal compete well, at least for the top four or maybe just in the top six it's still good I guess.