Following the game, the former Arsenal goalkeeper believes Jose Mourinho's side are the strongest side in the division.
He is quoted in the South Wales Evening Post, saying: "If I am completely honest, comparing them to Manchester City who are up there with them, I think they are stronger. That is my opinion. Their attacking force is something really different, they are very sharp, quick and technical. They are always trying to surprise you, they make great runs and are always in good positions."
Chelsea's thrashing of Swansea sent out a message in the title race as the Blues ran riot at a ground that has been difficult for visiting sides so far this season.
Manchester City fell five points behind their title rivals by succumbing to a 2-0 defeat against Arsenal at the Etihad Stadium, meaning they will travel to Stamford Bridge in just under two weeks' time feeling the need to win in order to keep the title race well and truly alive. A win for Chelsea would take them eight points clear, and it's hard to see them relinquishing such an advantage at this stage of the season.