Here's the thing though, Arsenal doesn't need a traditional striker. In fact, if you watch Harry kane's game(which you do), you'll have noticed he has evolved his football to suit modern requirements of a "striker".
Jesus role is going to transcend simply scoring goals because he will not be our "number 9". He's just going to be a part of a forward three that press high.
WHat Arsenal is looking for is an all round footballer, rather than a "striker". This is why Lacazette was preferred over Auba.
Jesus will actually be massive and while his goalscoring numbers overall aren't impressive, you need to keep in mind that he wasn't always a regular starter at City, and he also has one of the best minutes to goal contribution in the history of the Premier league.
Also, he is a much better addition to our team than Richarlison is to Spurs.