Chelsea was not just lucky they deserved what they achieved since they started very well from the day 1 of the club world cup competition, getting to the finals they proved himself and right and proved everyone who never believed that they could lift the trophy wrong. Enzo Maresca has proven himself in the competition and for next season every team needs to be ready because the league is going to be more competitive.
The only time I can confidently say Chelsea are not so lucky is when they face PSG, they killed that game and spin football around, including me I lost money I bet on them because I had the believe they were going to loss but things went south. However, if this guys face some other club from quarter final, semi final and knockout stage, they will be out before the final but the teams they faced were not up to their standards but they didn't decide that, it was decided by vote from the beginning.
Cookdata, I don't agree with all you had to say. It was all hardwork that took Chelsea that far up to the finals of the CWC. Perhaps if they had not beaten PSG in the way they did then I would have seen reasons to agree with your suggestion of luck in all the other teams Chelsea faced before meeting PSG. This is football we are discussing, and it's possible that PSG may not have survived to the final if they had met those teams Chelsea played from group stage to the semifinals. The game is unpredictable mate.