Since group stages until semifinal PSG has scores 16 goals total with only conceded 1 goal i think these records is proven so far they are one of the best team in this tournament besides that PSG has successfully to beat several big clubs such as Atletico Madrid, Bayern Munich and the latest is Real Madrid so certainly from these statistics PSG is much better than Chelsea
Before reach to the final game Chelsea hasn't faced strong opponents because they only fight against the clubs such as Palmeiras or Fluminense which on the paper the strength of these clubs is below to Chelsea and against PSG the real test for them whether Chelsea can able to beat PSG or not but currently PSG is unstoppable and it's hard to beat them