because Arsenal themselves haven't played well in some games which should have given them 3 points. Arsenal must accept this harsh reality.
Arsenal's only hope is to wait for Tottenham to lose. and Arsenal must win from Everton. although expecting Tottenham to lose to Norwich is something difficult. but Arsenal also has hope of getting into the Champions League.
Honestly credit should be given to Arsenal after a poor start in the league later up their game and aspire for top 4 unfortunately couldn't qualify, soccer analysts and pundits never gave them any chances of qualifying for top 5 of the league, infact at a time there was speculations that Arteta will get sacked after a streak of poor results, the club features a lot of inexperience youngsters this season despite that they performed well, the team had been receiving a lot of criticism lately after some poor runs, however I am optimistic that next season the team will be the team to beat.
Actually, it's true that Arsenal started very poorly but gradually started playing well, I think they should have been able to continue. They lost important points in crucial moments. That's why they will not be able to play in the Champions League because I don't think Tottenham is going to make any mistakes now as they have achieved the position that they wanted.
Actually, I want to give credit to Tottenham for making a good comeback and achieving the fourth spot in the league with only one match in hand.
Regards
duke