It must be admitted that Arsenal's game was much better than Manchester United, Edward Nketiah was the hero of Arsenal's victory in that match, he scored a crucial goal in the 90th minute for Arsenal's victory, even though the referee had seen VAR, but in the end the goal was a complement to Arsenal's victory.
This was an important win for Arsenal to keep them safe distance from Manchester City. While Arsenal have 5 point lead over the current champions, Arsenal have 1 match left which will most likely put them 8 points ahead.
The match was really tense, in addition Arsenal played catch-up soccer and only at the end was able to pull out the victory. Nevertheless, I would not call the gap of 5 points a safe distance from Manchester City, the winning streak of Arsenal at any time can stop and then it would be really dangerous to have even a 5-point gap