Like seriously? Where you expecting Arsenal to knock off PSG just like that? I was hoping they do that but I never expected it because the chance was small, no way they can do that like it a simple game when PSG hasn't never had it fair, they ball hard and kick any team that comes there way and so Arsenal are going to eventually at the second leg unless football happen but like I said, the chance is small and it will cost them alot even if they try.
This second leg isn't going to be difficult for Arsenal if at all they didn't concede any goal at emirate but because they did, it is going to be difficult for Arsenal. This was exactly what Dortmund did and were thinking it was going to be easy but instead they got whoop in the ass and never qualified but that was even their own home but this is PSG home, only Arteta understand how he plans to win the second leg but it's going to be very difficult.
Arsenal now are in a same situation like PSG in round of 16 by losing in Paris to Liverpool but winning in Merseyside at Anfield stadidum. However performances of Arsenal and PSG at their home stadium are different. PSG played well and impressively against Liverpool even they lost that match, but Arsenal did not play well against PSG in the match today.
This difference means Arsenal will have more difficulty to play in Paris and there is another thing about PSG and Arsenal. PSG are more experienced than Arsenal in Champions League and at their coach positions, Enrique is more experienced than Arteta in Champions League. This factor can be helpful for PSG to have good tactical approach for the second leg in Paris and go straightly to the final match.
Arsenal actually played terrible today, at their home stadium and in a very important match semi final, they got a conceded goal first at a very early minute, 4th minute. It's terrible start for any club and PSG were too experienced to secure this important win. Arsenal can feel lucky that they only lost 0 - 1 and they only need a minimum win in Paris to equalize aggregated result.