In the league round, we can see the difference between these two teams when they were in the Champions League, yes Liverpool is in 1st place and Paris Saint Germain is in 15th place, even if they were unsuccessful in the last 3 matches at that time, they would have been eliminated early. But luckily they were able to win in a row after they got a series of defeats.
I don't mean to underestimate Paris Saint Germain at all, it's just that I judge and make predictions based on their performance statistics.
This means absolutely nothing, these are two different phases of the competition. Just because some teams had a better group stage games and qualified directly doesn't mean they are so good. Yes, Liverpool is a formidable team this season and they have shown that over and over again. The thing is, you should also check at current forms of the team. PSG so far has hit the ground running with this their wonderful form. I'm really afraid of that game because that's going to be the epic game of this Round of 16 tie in my opinion. As it stands, I believe both teams are afraid of each other because non of them knows for now who will qualify for the next phase, even us here, can't really say who will qualify amongst both teams.