What is certain is that Chelsea performance will not be as bad as Real Madrid against PSG, so there is no harm in pinning hopes on Chelsea. It's just that when PSG is favored it is also a very natural and reasonable thing if you look at the PSG trend which continues to humiliate the big team. I will be happy if there is indeed a team that can overthrow PSG because until now no one has been able to do it.
There is actually no certainty with this, Chelsea and Real Madrid are two different team of which if we are to even make comparison, Real Madrid has got a better team quality with the kind of players they have, so saying Chelsea will not perform as worse as Madrid will only mean you are a Chelsea fan and it is just your way of expressing support. Anyways I still wish them the best and just for the sake of the football aesthetics that comes with different teams having to win and not a particular team carting away everthing and giving off some boring feel to the game, I would lovento see Chelsea win else Paris Saint-Germain remains the favourite for this finals.