I used to declare PSG the best team, but they were defeated by Chelsea, who had a poor performance in the Premier League previous season and won the Club World Cup easily against PSG. Since then, I've lost hope for PSG. Yeah, everything is a gradual process, but Xabi Alonso most have to working on Real Madrid's performances to ensure that they improve a little before the season begins so that they can be more consistent in the new season.
Defeated by Chelsea in FIFA club world cup doesn't mean to remove the status of PSG as one of the best team in the world. PSG is still one of the best teams, it remains one of the biggest candidate of the UCL champion in the next season.