Keep in mind that despite Jesus' talent, he was in and out of the city squad because he was signed as a squad rotation player. He never had a decent run.
If youlook at his goal and assist returns for all the matches he starts, you will find that it is not as bad as many claim it to be.
Also, keep in mind that he was never used as a Striker at City and he will also not be used as a Striker at Arsenal. In fact, at City, he spent most time on the flank or played as a false 9.