Arsenal and Liverpool fans should enjoy their flying starts to the season as it won't last.
Tottenham has been Arsenal's only opponent of note so far and the Gunners' defence has only managed to keep a shot-shy Spurs at bay, conceding in their other six Premier League games.
Meanwhile, Liverpool are clearly dangerous with Luis Suarez and Daniel Sturridge leading their attack but what happens if one or both get injured? Plus they were outplayed at Swansea and beaten at home to Southampton, illustrating that the Reds are still a work in progress.
As for Manchester United, we have already seen enough to suggest that retaining the title will be a tall order for David Moyes this season, especially as he acclimatises to his new role. The Scot has little experience of rotating a team playing in the Champions League and there's a distinct lack of zip when it comes to the champions' football at the moment.
Manchester City have been a mixture of good and bad under Manuel Pellegrini. Aside from the Bayern game, the Citizens have looked like world-beaters at the Etihad Stadium, especially in the derby where they ran United ragged.
However, it is strange they are title favourites when they have been shabby on the road against Cardiff, Stoke and Aston Villa and there are injury concerns over their captain and best defender Vincent Kompany.
Tottenham Hotspur's title credentials were laid bare during a recent 3-0 home reverse against West Ham and scoring goals appears to be a problem for Spurs. Which leaves us with Chelsea.
Jose Mourinho is changing the way that the team play. This can't happen overnight although the former Real Madrid coach knows what he's doing when it comes to getting the best from Juan Mata, while new signings Andre Schurrle and Willian are starting to come good at the Bridge.
Chelsea's worst game actually came in the Champions League against Basel and that result should be easily remedied after winning against Steaua, while Mourinho will be pleased enough to have 14 points on the board after an opening set of fixtures which have included Manchester United and Tottenham away.
The west London side should continue to improve as the season progresses and have a bulging squad of players which will prove especially handy during the Christmas break when games come thick and fast. They will win the Premier League this season.
Matthew Glazier is the Managing Editor of www.bettingpro.com, a sports, news and betting website.