I agree with you if Chelsea can stop PSG from scoring an early goal in the final or even scoring in the first half, Chelsea might have a chance of winning the Club World Cup, but I think Chelsea shouldn't only do that if they want to win the Club World Cup; they should also be the first to score a goal in the final. If Chelsea can do these two things against PSG in the final, they are one step closer to winning the Club World Cup, but if they fail, PSG will likely beat Chelsea with so many goals.

If you check well, most of PSG goals, in the matches they won with big margin, came in the first half which means that is the time any team that want to stop them should focus on defending and preventing them from scoring. When their strength and stamina might have reduced from second half, then the match becomes balanced and open for either of the sides to win. This is just the point I'm making and if Chelsea should use this strategy,  they might have hope of winning.

Chelsea must play full defensive and not giving opportunity for PSG scoring goal at the early minutes, looking last match when PSG easily scoring until four goal against Madrid looks Alonso's tactician more offensive without fully defensive. If Chelsea fully play with defense and prefer counter attack I think have chance for winning the games and not conceded many goals such as easily in last three consecutives game PSG success scoring many goals.

Last three games in a row since knock out round, Chelsea have conceded two goals and success made clean sheet when eliminating Fluminense at semifinal round, believing with Chelsea if can play fully defense tactical have chance for winning the match and huge pressure for the early minutes if won't conceded goals from PSG as usually scoring goals every early minutes.

In recent times, it has become very difficult for opposing teams to stop PSG's attacking players. Even Inter Milan's strong defense could not stop their strikers in last season's UCL final and Real Madrid's defense could not stop their attacking part in the last match. PSG's attacking part has been a headache and threat for the opponent many times in big matches. Now let's see what medicine Chelsea take as an antidote to this headache. It is also worth watching how they take action against this threat from PSG.