It is very normal and okay to believe that PSG will win the trophy because so far their performance has made it okay to agree to that assumption. For PSG this is a very critical one for them to achieve and they will stop at nothing to achieve it so I don't expect they will perform any lesser than expected of them but they hopefully do not take Chelsea for granted so they don't get surprised in the end.
Yeah, despite the fact that most of us do much believes that PSG will win the final against Chelsea on Sunday, I'm still keeping my fingers crossed because I know this is a game of football and anything can happen. But if we are to follow the way things are, PSG will come out victorious but the good thing is that, we won't be seeing that kind of score line we saw in the Champions League finals Vs Inter Milan. I don't think Chelsea will and can be reduced to that.