Both teams played well but in terms of attack quality PSG has a very extraordinary advantage, attractive and aggressive PSG cannot be matched by Arsenal players. I really like the changes made by Enrique to this club, PSG was able to dominate the match at Arsenal's home. The situation will be increasingly difficult to turn things around for The Gunner at PSG's home later and most likely for PSG will show a more intense game.
PSG will continue to make a much more deadly attack in the second leg because winning by one goal in the first leg will clearly not be enough for PSG. And I also don't think Arsenal will be able to change things to make them more profitable because PSG has been completely different this season to the point of making every opponent who faces PSG in the Champions League very difficult and that has been clearly felt by Liverpool and yesterday by Arsenal. So I think PSG can have the potential to enter the Champions League final if PSG does not lose in the second leg.
PSG has shown a great level of determination and resilience this season. I have no doubt that they will defeat Arsenal in the second leg and advance to the finals. Judging from the way Arsenal played yesterday, I don't expect anything from them again this season, unless they are planning a serious comeback in the second leg, which I doubt will help them reach the finals. Just like I have said before about Arsenal, one of their major challenge is them maintaining consistency. They have tried already getting this far.
PSG has indeed proven to be dominant this season. If they can maintain this same energy, I see them already going home with the trophy.