Jesus started ahead of the Argentinian in the 2-0 victory over Crystal Palace on Saturday and he justified Guardiola's decision by heading in the opener - his 50th goal in just 110 appearances and the seventh consecutive start when he has scored. He is hungry, he wants to become an important striker around the world.
"To compete with Sergio (Aguero) is maybe the most hard thing". He's a goalkeeper and the club signed him, first of all, to save, but it's a great bonus that he can play with his feet, the quality he has to play with his feet is wonderful. Sergio is a legend, an outrageous player - amazing, but Gabriel is so calm.More news: India tour in doubt as Bangladesh cricketers go on strike
And Guardiola believes the £27 million ($35m) transfer fee makes him one of the club's best ever pound-for-pound signings.
In particular, Guardiola referred to an opportunity in the dying stages when Jesus opted to shoot rather than set up an easy chance for Kevin De Bruyne and insisted that could have come back to haunt City had it not been for earlier saves from Ederson to deny Christian Benteke and Wilfried Zaha.
"He is the No.9 for Brazil so he is an incredible player", Guardiola added. We have to be clinical. "He fights with Sergio and Sergio fights with him for one position", Guardiola said. "When people talk about the Champions League being the target, we're still not ready. we can still improve".More news: Liberals projected to win most seats in election
"We create a lot and don't concede but can improve". At times when you think you are in a good shape, all of a sudden a bit of skill and brilliance opens it up and it was two before we knew it, so that was a sucker-punch for us and a big moment for them I felt.
"I'm very happy, you know, because last season I had a hard start to the season", Jesus, who has now scored in each of his last seven starts for City, told Sky Sports. I can't play any more because I'm not the age to play, but he can play - it'll be a long career.More news: Warren says she will soon release plan to fund 'Medicare for All'