Indeed for several seasons now Arsenal has not been able to win the premier League, so just like you said there efforts and determination last season was very impressive but there hard luck on wining the premier League still follows them even if they have managed to top the league again, so I think I will agree with those that said Arsenal will not be able to win the premier League this season even if they are currently on the top position because one thing about Arsenal in terms like this when you feel they have stabilize there performance then they will surprise you in the next minutes by losing form so for now we cannot conclude there stand.
Arsenal looks like this season will extend its failure to lift the EPL trophy, even though it is currently in first place, but is very vulnerable to dropping again. In the remaining 10 matches, Arsenal is more difficult than their two rivals Man City and Liverpool. Of these 10 matches, Arsenal will still face Man City, MU, Tottenham, Chelsea and Aston Villa, all of which have the potential to lose points for Arsenal.
To be able to force victory on a team like this, you need a strong mentality and you must try to pursue goals quickly so as not to reduce the winning mentality to being a loser. If they fail to score goals in crucial minutes, it will be a heavy burden for Arsenal players. Indeed, in football anything can happen, but looking at Arsenal's remaining matches, it seems difficult for Arsenal to win the EPL league trophy.