City dominated from the outset at the Etihad Stadium and although they were made to wait until the 43rd minute for Pablo Zabaleta's opener, the result was rarely in doubt. Edin Dzeko and Sergio Aguero, from the penalty spot, wrapped up the routine success after the break.
Stoke provided little threat during the game and Pulis made no excuses for their lacklustre display.
Pulis said: "I've no complaints, they were the better team. Someone has just asked me what the difference was - I said about £220million.
"For us to come here we have to bring our 'A' game and City have to be off it. That wasn't the case but you have to sometimes open your eyes and look at the reality of everything. They have got a bit of a head start on clubs like us.
"I don't know whether it was because it was the fourth game in the holiday period and we didn't bring our 'A' game - but I am not going to criticise the players.
"They still worked their socks off, they worked very hard. City were the better team. You hold your hands up and dust yourself down. We have got a tough game now at Crystal Palace."
The Potters had been unbeaten in 10 matches prior to the game but Pulis will now consider strengthening during the January transfer window to ensure a strong finish.
He said: "We would like to do some business but we have to wheel and deal as well. We have to get a few out.
"If we can do that we will try to get a couple in. I think the squad needs a little bit of fresh blood but we have to generate it. We can't go out and spend the money. If we get room and space and the players are available, then we will do it."
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