Chelsea have struggled very hard in the match against Arsenal they tried their best to give goals but in reality it is still difficult to break down Arsenal's defense, If Arsenal have understood the strategy of Manchester City which only relies on Erling Haaland and always provides tight guard so it is not easy to get the ball then Manchester City may also be beaten by Arsenal.
Well even though Haaland is the top scorer on Manchester City, it doesn't mean the other players was play bad. Don't forget they have Kevin De Bruyne which currently the best central midfielder player in this season, Phil Foden and Riyad Mahrez who have a good speed and accurate pass to support the center forward. As you can see in the last 2 matches of Manchester City, they let Alvarez to play, not Haaland and they won the 2 matches.
Manchester city have few players that are performing well this season and if they are out of the squad, you will spot the difference it makes to their performance. The crucial game against Fulham at the weekend, Halaand and Foden didnt start and we could see how they struggled to get a win. That shows you that the key players in that Manchester city team this year are just Halaand, Phil Foden and Kevin Debruyne. And if they can stop them in games, then you will win against them.