I'm used to results that don't match up in sports betting... so be prepared.
But in this match I see that both teams seem to have pretty good goal productivity... so it is likely that in this round they will reply to each other.
In leg 1 Arsenal will probably want to win at home and PSG won't want to be too far behind even if they lose... Yeah it's possible that both teams can score, it seems that Arsenal players' minds are set on this match.
Arsenal must be careful when hosting PSG and they must forget a big win at home stadium in quarter final against Real Madrid. If they are obsessive with that big win and believe that they are able to repeat it with PSG, it is dangerous. It can make them as an arrogant host that is what wanted by PSG. When a host playing with an arrogant approach, the guest will be given more chances to break the host down.
If Arsenal host PSG humbly, they will be able to get good result but Arsenal must know that even a draw in a first leg won't be too bad result. Having an acceptable result from a first leg will give Arsenal multiple tactical choices I. a second leg in Paris. Arteta seems to be a careful and well-minded coach but it will be up to his players too.