We still have to see how Madrid does this season in CL, but they're the best team in the world based on recent results. Based on recent results, PSG isn't even the best team in France.
Maybe, you do realize that I didn't put PSG above Barcelona? My point is simply that when a team lose a key player and an other one gain a key player, the teams are modified enough to make past results irrelevant, to me at the moment no one can tell who has the edge.