It was a good performance against a good team, and although Chelsea were lucky to get the late winner, nothing should be taken away from this team that is finally looking like a solid group.
Jose Mourinho used to lament the impatience of the press as he gradually built his new Chelsea side, but in the last few games, Chelsea have looked increasingly like a side to be reckoned with, a championship-winning side.
If that is not enough proof, here are four takeaways from Sunday's match that show that Chelsea are now the favourites to win the Premier League.
We have known this from the start of the season, but Chelsea's strength in depth was on full display against Man City.
Of course, the Blues have midfielders in abundance. When an extra push was needed, Jose Mourinho was able to bring on reinforcements in the form of John Obi Mikel and Willian. Chelsea's depth at midfield is so great that Juan Mata didn't even get a look-in.
However, what we saw on Sunday was not just depth in midfield, but up front. Chelsea's striking situation has been talked to death, but before this match, few people would have claimed that they had much depth up front.
With Fernando Torres adding to his two mid-week goals and Samuel Eto'o also off the mark, Mourinho now has two (dare we say it?) in-form strikers to choose from.
Which leads us nicely to our next reason why Chelsea will win the League.
Fernando Torres is a striker who will always score goals. There should be no more "he's back," or "he's not back" talk, no more "form is temporary" cliches. Let's just say this right now: Torres is a striker, and as such he will score goals.
We didn't necessarily learn this on Sunday, as Torres had more than 20 goals for Chelsea last season in all competitions.
However, what we saw against Man City was a man who will always come good when it matters the most, even if he misses a sitter early on. He did it with an assist and a late goal on Sunday, he did it at the Neu Camp in 2012, and he will do it again.
Once again, Jose Mourinho proved his quality against Man City.
His team selection for the match was inspired. Oscar is still running the show, as Mourinho had predicted at the beginning of the season, and Andre Schurrle is building up a tremendous run of good form, justifying his selection ahead of Juan Mata.
Furthermore, when another manager might have removed Fernando Torres towards the end of the match, Mourinho simply added another striker.
OK, so it is not an exact science, but just as it started to seem as though Chelsea weren't receiving the kind of luck that champions need, a goalkeeping error lead to their last-minute, game-winning goal.
If you are going to win the League, you need a little bit of help every once in a while, and those last-minute victories are often the ones that make the difference come May. They are the ones that will win Chelsea the Premier League.