Guardiola's City cantered to the title last season, finishing 19 points ahead of second-placed Manchester United.
Liverpool and Chelsea join City as undefeated teams from the first 11 games this season. But the Spaniard thinks observers should look over the past three or four years rather than just the current season to assess competitiveness.
"I don't know if it's a problem," said Guardiola in his pre-match press conference for Wednesday night's Champions League meeting with Shahktar Donestk.
"That means we have the same rhythm as last season. We have two less points but we didn't lose at Anfield, for example.
"The other difference is the two opponents are stronger. It's not easy to find that in the Premier League in the last decade. The quality of the Premier League is higher."