Chelsea is a very good team. Chelsea is in very good form at the moment. If we compare Chelsea with other teams, we may see that many big teams are in very bad form and playing very badly compared to Chelsea. But this is not how it should be. If a team has to do well like Chelsea this season, they will have to work very hard and they cannot be allowed to have any kind of weakness. They have to prepare themselves very hard. Currently, very small teams are adding many big players to their teams and they are trying to get to a very good level.
I do not know if you have watched Chelsea play recently, apart from the champions league, the premier league is like the toughest and most competitive of all the leagues across Europe and so it will be okay to draw judgment from their Premier league performances, if we are to do that then your comparison discussion will not be true as other bigger teams are doing well and appear to be in a better form than Chelsea. Chelsea needs to do more than they are doing now to even secure a decent finish in the premier.