Arsenal have lost two league games on the spin, so the next time they step on the pitch, at home to Newcastle on Saturday, they are going to have doubts instead of momentum and confidence.
No matter how much quality their players have and how good their preparation, tactics and everything else is, what they have to deal with now is pressure.
Their fans are turning up at the Emirates as nervous as kittens and transferring their fears and frustrations to the players.
City, though, are not under any pressure because they are in a situation they probably never expected, and they have also won the league so many times recently.
There was a time during Sunday’s game when I thought it was not going to be their day. It was 1-1 and they had hit the woodwork twice after Gianluigi Donnarumma’s mistake let Arsenal back in the game.
You think that way when you are watching a game more than you do if you are playing in it, and City certainly never had a negative attitude.
They were relentless with the way they attacked when it was 1-1 and, rather than sit back, they kept attacking when they went 2-1 up.
I was talking to MOTD pundit Wayne Rooney after Sunday’s game and he said Sir Alex Ferguson used to tell Manchester United to do the same. It was a case of “go and score another”, and never shut up shop and be cautious.
City’s relentlessness comes from their manager too, and also having top quality players with an elite mentality like United did.
On top of that, it definitely helps having a lot of players in their team who have won so much.
Their players look so comfortable, even the ones who have not won anything. Rayan Cherki just seems to be enjoying himself.
The desperation you see from Arsenal is not there. City’s fans are not worried – they are just enjoying it.
Danny Murphy was speaking to BBC Sport’s Chris Bevan.