It seems that Chelsea has learnt how to win by all means, either by crooks or hard work.
If Chelsea will continue to win this way, they are going to be threat to many teams.
But now it seems that Chelsea has an issue, Palmer is out and today Delap is injured and infact, Chelsea wanted Jackson back to fill the space but it seems that Jackson has already sealed his fate and already made up his mind to be in Germany with the Bundesliga giant.
So, if Chelsea doesn't play their game well, they might be having attacking issues and it will affect them especially when champions league sets in and they will be having many matches to play.
From the look of things Chelsea is already a threat to so many teams, just look at how they performed in the club world cup, the chemistry between the team is something else. Last season in the first half of the season, the team solely depended on mainly one player which is Palmer. But from their strategy and way of playing, they don't depend on just one man anymore, they play more as a unit and look for spaces to exploit from various angles and from different players.