The Italian manager was relieved after a Sergio Aguero penalty and Samir Nasri's late winner earned his side a vital victory in their quest for Premier League glory
The 2-1 victory at the Etihad Stadium, sealed late on by Samir Nasri, ensured that City kept pace with Manchester United, just one point behind their local rivals at the top of the Premier League.
The Italian told Sky Sports after the game: “I think [this game] is worth more than three points.
“I think that we deserved to win this game because we had three or four chances after the first 20 minutes, and now we have this problem where we have chances but don’t score.
“When they scored their goal we didn’t deserve to go down 1-0, but we desired to win the game.”
Controversial striker Carlos Tevez came off the bench to make his first appearance in six months following a well-publicised falling-out with the club and it was his through ball that set Nasri up for the 85th-minute winner.
Mancini was pleased with the Argentine’s contribution, adding: “I’m happy because he did well although he’s not in good form.
“I don’t think he’s fit 100 per cent but he knows football.”
Gary Cahill had put the visitors ahead just before the hour with a strike that deflected in off Yaya Toure, and the former Inter coach admitted that, following the goal, “my feeling was ‘squeaky-bum time’.”
Asked if that sentiment was likely to continue through the rest of the title run-in, however, Mancini was more confident.
“No, now we are there,” he argued.
“We have one game [on] Saturday, we want to go to win at Stoke – we know that it will not be easy to win there – but we want this.”
Sergio Aguero was the other man on the scoresheet for City, netting a penalty after Chelsea’s Michael Essien was punished for a blatant handball.