United and City stormed to the top of the Barclays Premier League before the international break, scoring 13 and 12 goals, respectively, in their opening three games. Last time out Chelsea edged past Norwich before watching as City romped to a 5-1 win at Tottenham and United annihilated Arsenal 8-2.
But Chelsea manager Villas-Boas was unfazed, saying: "It's good for them. They've gone on to score a lot of goals and it's good for British football. We just hope to score one more goal than the opponents."
He added: "Man United played to perfection and managed to score a lot.
"They are, with Man City, leading the table for the Barclays Premier League and we are two behind them. We want to grab them.
"Our objective is on shortening distance and not on what the others do in terms of performance."
Chelsea have hardly dazzled since Villas-Boas took charge and the 33-year-old admitted the quality of their game needed to improve ahead of Saturday's trip to Sunderland.
"I think it can be better and our objective is to transform it," he said.
"We have to improve on a weekly basis, on a game-to-game basis. It's what people expect from us - to get fluency in the way we play. I'm very happy that we have been creating enough chances to win games and this is a good sign for us.
"We just need to improve on the quality and fluency of the game. Let's see what kind of response we have now."
Source: PA
Source: PA