Arsenal lost both in the league and the Champions League.
I don't think this point loss and defeat is good for Arsenal because they could have found morale in this match.
Aston Villa won today, if they continue like this they can participate in European cups if they rise to the upper ranks.
Liverpool has already won the ongoing EPL season, so no one is contesting for a season title here. The only contest in EPL right now is to qualify for the next UCL and with three more games to go I think Arsenal is very much safe for finishing among top 5 of EPL.
The worrying point of Arsenal is that they have lost the first leg and must win the second leg to give themselves a chance to qualify for the finals. Arsenal has a history of losing crucial matches when they are very close to winning the title.