Lewis Dunk's own-goal soon after gave City a comfortable margin of victory in an opening weekend that has seen Arsenal concede three at home to Leicester, Liverpool draw at Watford and champions Chelsea lose to Burnley.
The Frenchman has been a major disappointment since joining City in a £42 million deal in 2014, and spent last season on loan at Valencia.
"We bought three and the market is so demanding right now, for all the teams around the world, not just for Manchester City".
"I saw last season how tough the league is - it doesn't matter who the top teams are".
"It's a very disappointed changing room, which shows it means something to them and shows they know that for 70 minutes we were very much in the game". "These two guys have goals in their blood, they live for that, but to score goals we have to try to create".
"We are so satisfied for the first game, the way we played".
But if you're wondering why the Manchester clubs have been dominating headlines in England, it's because the rest of the big teams have been doing little online.
But we can not forget that when we do something better than last season it's because we've been one year together.
"Here every game is a battle, and from my experience - in Barcelona too - it's hard against a newly-promoted club".
"It is disappointing but that is the quality Manchester City have got and we know that", he told BBC Sport. "Against newly promoted teams it's always complicated - they defend so deep, with 10 players - but we were able in the end to win the game".
Afterwards the manager was predictably delighted with all the riches at his disposal and promised that City will "improve the way we attack" this season.
"So okay, we accept what people say".
"It's very hard when you see the spending of some clubs in the summer, Manchester United of course and Chelsea who will be right up there. The one time we got stretched, they capitalised on it".
Guardiola, a former Barcelona and Bayern Munich manager, has yet to win a trophy since taking charge of City at the start of last season.