Arsenal's failings in front of goal and the lack of recognised striker have holed their Premier League title challenge below the waterline. In reality, they are only playing to ensure a place in the top four while training their sights on the Champions League.
And they were in evidence again here as Arsenal dominated possession - which was 68.2% to 31.8% in their favour - but failed to apply any sustained, serious pressure on a United side short of quality and shorn of confidence.
Utilising midfield man Mikel Merino as an emergency striker, Arsenal had 17 shots but only six on target - the same as United. Too often pointless passing in front of the home side's defence fizzled out on the edge of the penalty area.
They ended up relying on Raya, who must take his share of responsibility for United's goal, to avoid defeat with those three crucial second-half saves to make amends for the error of judgement in the first half.
Arsenal surely know in their heart of hearts that the title pursuit is over and the Premier League is Liverpool's, but they must somehow find a way to repeat the potency of the stunning 7-1 win at PSV Eindhoven in the Champions League in midweek rather than the blunt instrument they were here.
The Gunners got a point in the end, but it is a meaningless one in title terms.