I doubt if the champions league is going to be any easier at this point so any team seen at This point i feel are actually capable of anything at this time. Dortmund and PSG and to teams that can't be under estimated for any reason and so i thiny like you said it's very possible for either of both teams to be able to scale through at this point because they are both in a fair position and have relatively good strength they can actually decide to use their home advantage when it arises against each other and hope to be able to probably win and then the best team gets to the finals of the game.
I doubt if either of these two teams is going to make it easier for the other because both teams are definitely going to try their best to making sure they are able to get all the best from this game and probably get to win the trophy at the finals but then whosever gets to win the first round gets to have more. Chances and privilege to be able to stay ahead and probably a chance to get to the finals of the champions league.