If we look deeper into comparing Arsenal and Man City, it's not actually a problem that Arsenal must have a striker like Haaland.
Now let's look at it logically and take examples from other league teams like Bayern Munich and Leverkusen.
Last season we all know that Munich had Kane with his scoring machine achievements and made a big contribution to the team. We even have predictions that Munich will be stronger last season. But the facts say that Leverkusen won the bundesliga title. While Leverkusen does not have a player like Kane.
Well, the conclusion is that Arsenal does not need a player like Haaland because Arsenal performance is actually very good. But what Arsenal needs is strong consistency.
If we look at Arsenal at the beginning of the season, they always give extraordinary performances both domestically and in the UCL. But at the end of the season they lose their energy and their performances are inconsistent.
Arsenal needs a striker urgently, Gabriel Jesus is not reliable enough and cannot guarantee Arteta the goals needed every season to compete for silverware. This season and even the previous seasons, we saw on different occasions where Arsenal played well and just needed the goals to get a win but failed to accomplish that. A striker like Osimhen can guarantee more goals, you can agree that goals win you games no matter how tough the opponent is.