Man City has a better chance of winning because the match will be held at the Etihad Stadium so the players' motivation to win will be much higher. If we think Man City is not extraordinary then I can confirm how Pep Guardiola's men are so strong when playing at home and they have shown big changes when playing at home. However, when it comes to trophies the three clubs still have the same chance, but the match between Man City vs Arsenal will be the start to ensure champions this season for anyone who is able to win.
Well, I don't think that matters much. Whether they are playing at the Etihad Stadium doesn't really matter, especially considering the last match Arsenal had with Manchester City at City's home, which resulted in a two against five defeat that Arsenal inflicted upon Manchester City. So even though they were playing at City's home, Arsenal was able to beat them in their last fixture togetherr, as a competition.
Thus, this match shouldn't be any different, especially when Arsenal, at this point, is eager to utilize all the powers, knowledge, and strategies they have to maintain their number one position in the league standings. So their major target at this point would be whatever it takes to be strong and ensure they score a goal. Additionally, Arsenal would do better if they strive to score a goal in the first half. Let Arsenal make the first goal, regardless of how it happens, so that Arsenal will have more strength and energy to strike even more. I've realized that whenever Arsenal scores two goals consecutively, they gain the energy to keep scoring more goals, unlike if they are allowed to be defeated in the first place. Therefore, that should be Arsenal's target at this moment.
Arsenal is looking this season to win the English league title and if this opportunity is not utilized properly then next season everything will change where another club could become a title challenger. I'm not so sure about Arsenal but I have no doubts about their ability to compete this season and Arteta's job must be to ensure that this season.
I see this as one of the reasons why Arsenal must not joke with any fixtures they have in the remaining couple of games as a club. They currently have all the opportunities at their disposal to secure the league title, especially since they are at the top of the table. Therefore, they need to focus on defending their position by striving to score more goals and avoiding defeats. The responsibility lies on the manager, the players, and the fans at large to maintain high morale for Arsenal by showing up and supporting them in the remaining games.