You may be right when you Said that arsenal is always superior, that's considering their past record. but I want to tell you that things might work different for them this time. Because chelsea is not always that easy to be defeated more especially when they are playing with bigger teams like liverpool, manchester city, arsenal, manchester united, this above mentioned teams don't always defeat them so easily.
When it comes to football, anything can happen, but we should know that Arsenal is having higher chances of winning the match. The match might be a difficult one for the two teams, and even if Arsenal will be winning, it’s going to be with a slight goal margin. Chelsea are currently fighting to qualify for the champions league, and Manchester city playing draw is an advantage to Chelsea, their points difference is going to increase, so they will do everything possible to get a win against Arsenal in their next match, even as it’s going to be difficult.