One of the biggest reasons that made PSG stand out in the Champions League was because they knew that they had already given a big point distance in their local league, so it would be hard for any team to meet up with them even if they lost a game. Moreover, they were the only best team in the local league, so it was so easy for them to have enough time and focus in the Champions League, and they ended up winning the trophy they had been wanting to win since they founded the club.
I have believed in them since the semifinals that they will definitely be the team that will win the Champions League trophy, but I was never expecting to see a clean sheet. That was unexpected to me that day, but it was very amazing and joyful. I hope they keep the same energy next season.
this works if you have a relatively easy championship, I don't know like the Spanish one or the French one
when you have a super competitive championship like the Italian one, it becomes really difficult to escape with a big advantage of points
it becomes really difficult to dominate.