It's no longer about who is big and who is not. In fact, last season should have taught most people a lesson. For example, how many people here thought that PSG would go all the way and lift it? I am quite sure they were very few, if not, none! If you recall very well, PSG had to even go for play-off in order to qualify for the next round.
Strength or Player quality aren't always the key to a club's success, and I agree that last season, very few people believed PSG could achieve new Champions League history, but that was achieved through their hard work. It's too early to say which club is strong and which club is weak, because sometimes our predictions don't go as expected. This can be seen more clearly, so the round of 16 could be the first step to see how far the teams will go in this season's Champions League.
As far as I can tell, PSG performed well overall. We must accept that a team does not need one or two big stars for good success, but if the entire team has quality players, then that team can perform well. You might agree with me that in football, the result of a match or how the team will perform in a tournament depends a lot on a manager. Luis Enrique played a big role in PSG's title win. In each match, what format to play, what team to play against, all these things were planned well in advance by the team's manager and the players could play according to that plan. Luis Enrique was also quite proactive in this regard when to change a player and who to replace, which is why PSG has achieved success overall.
It's also worth noting that they faced a difficult fixture in last year's championship. We saw Paris Saint-Germain consistently eliminate English teams in the finals and then put on a show against Inter. In reality, this wasn't a simple championship. They eliminated Liverpool, beat Manchester City before that, eliminated Arsenal, and won against Aston Villa. They won the Champions League by coming through a very difficult qualifying group. I don't know what they can do this year, but there's nothing stopping them from winning the Champions League title again.