At first I thought like you. But it turned out that I was wrong, Gabriel Jesus is not as good as Haaland, so Man City's strength increased many times after Haaland came. Haaland became a striker who needed a lot of players to stop him. This is because he is bigger and stronger. Unlike Jesus, he is good but not as good as Haaland. Haaland was able to attract many players to stop his movement. So Haaland opens up a lot of space for a second striker or midfielder to make a goal-bound shot from outside the box. It worked during the FA Cup final.
I still think Manchester city doesn’t depend wholly on the abilities of Haaland as a striker to score goals. No doubt, Haaland is a very talented striker and Manchester City’s strength may have increased a bit with him on the squad. He’s a big and energetic striker who’s also moves quickly and opens up beautifully for passes or crosses from other teammates to score goals.
I wouldn’t say Gabriel Jesus is not as good as Haaland. Gabriel Jesus is a more experienced player than Haaland. Haaland has his youthful energy as well as his height and build and he uses all that to the best of his ability.
I think Gabriel Jesus and Haaland really cannot be compared, because I think these two players have very different body shapes and playing styles. So yes, even though it could be argued that Haaland is replacing Gabriel Jesus at Manchester City, but I don't think so. Because after all, when Haaland was still playing at Dortmund it was actually clear that Haaland had very strong characteristics and this was very different from Gabriel Jesus. So yes, after all Manchester City managed to have Haaland because having Haaland in the Manchester City squad, of course, made Manchester City's performance better and always promised good results.
Well, body shape doesn't really count that much and we have some very good examples for that when we talk about great players. But Jesus isn't anywhere nearly as dangerous as Haaland. This is a numbers question and nothing else. When somebody scores over 40 goals per season for a team and the other striker scores und 20 goals per season, the striker with 40 goals is better in that season and if he outcompetes the other player for a longer period of time, he is the better player in general. I would find it right if Haaland gets some more time to prove himself.