Chelsea still needs more improvement to match PSG, the performance during semi final can't give them trophy favorite, after scoring first goal they became relaxed and jokey. Another issue will be from the coach when he fails to start his first team or decides to set players off position. In as much Chelsea don't stand a chance, i expect them to give a brief outstanding performance during the final at least as opportuned to qualify for the final, i don't want a similar result as PSG vs Inter in the Champions League final.
Currently Arsenal has been the only team in England that I can say for sure may give PSG some tough time if they ever get to meet, their only problem will be with their mentality, I do not trust Chelsea to stop PSG from lifting the FIFA Club World Cup this time, except PSG suffers a bad day, Chelsea is not their match currently. I hope Chelsea use this to gain some experience be just incase they get to the finals again some other time but PSG is at their peak so we not expecting any less from them.