I think the point difference for now is still 6 points and there is no certainty that Manchester City will win full points in the upcoming match even though they are superior on paper.
arsenal can still keep the distance to stay on top of the standings if they are really ambitious to win the title this season.
Arsenal next opponents are also quite tough in the upcoming matches such as Manchester city, Newcastle United and Chelsea so they have to make the most of their consistency in the title hunt this season.
The save of Ramsdale is important for Arsenal. It helps Arsenal to have same total point of Manchester City even they lose in a match with Manchester City and Manchester City win their unplayed match too. That save brings one point to Arsenal but it is so important and generally in this long season, Ramsdale did make many saves for Arsenal. Without him, they would have not gone far like this in Premier League.
They did played too confident but careless after having two goals. Instead of kicking the ball as far as possible from dangerous areas, they tried to exit pressing and convert from defense to attacking with intention to score more goals. They did it badly and had to pay a cost to lose two points.
For Manchester City, Arsenal draw gives them the opportunity to reduce the lag in the upcoming match.
Manchester City will have chance to take the lead if they can beat Arsenal and have same total points but have better goal difference against Arsenal.