Aguero shone with goals in each half as City thrashed their neighbours in the Barclays Premier League on Sunday.
There were plenty of other heroes in what was a fine City performance at the Etihad Stadium but Aguero did not want to take any of the glory himself or single out other individuals.
The Argentina striker said: "The most important thing is that the goals gave us the win.
"I'm very happy that we won three important points, especially against United.
"All the team were brilliant, the defence as well. We're all one team. There are no individual heroes.
"We're all heroes, even the players on the bench. The most important thing is we won and we are happy."
City started at a ferocious pace and went ahead after 16 minutes when Aguero finished off a slick attack by brilliantly volleying in an Aleksandar Kolarov cross.
Yaya Toure doubled the lead on the stroke of half-time before Aguero and Samir Nasri added two more in the opening five minutes of the second period.
The champions limited damage thereafter and pulled one back with a superb Wayne Rooney free-kick but the message City had sent out in terms of the title race was loud and clear.
Aguero, 25, said: "We didn't expect it but we were really motivated to win, and that led us to the victory.
"So that motivation helped us play without any anxiety.
"The most important thing is to give all you have, the confidence and the attitude that the team had was very good.
"And in the second half, despite winning 2-0, we kept playing like that. We played very well."