City - Arsenal match ended 2-2, but Arsenal would have won the match very easily if Arsenal had not been down to 10 men.
Yep. The match has ended with a draw result.
I don't know why you assume Arsenal will win easily the match if they didn't get a red card. It is Man City, it is impossible to win against them easily even if Arsenal has 11 players in the field. Even the red card really drops the chance to win, but we can't deny that Man City is the strongest team in EPL. However, the credit point is for Arsenal, they struggle well until the end of the match and get 1 point from the match. It is something great to get a point with 10 players against Man City.
While the match was 1-2, Trossard received a red card for the second yellow card in the extra time of the first half and Arsenal were down to 10 men.
Arsenal was not in good luck, it was too bad to get a red card in the first half of the match. With losing 1 player, Man City fully dominated the match. I see Man City even could win the ball possession up to 78% and they made 33 shots. Meanwhile Arsenal only could get 22% ball possession and made 5 shots only. This is like a training match for Man City.
In the second half, City attacked the Arsenal goal for a goal, but Stones scored the goal they were looking for at 90+8. Extra time worked very well for City today. With this draw, City increased its points to 13 and continued its leadership.
The extra time seems quite long, mostly it is under 5 minutes. Sure, it worked well for Man City, they could score in minute 90+8'. And the match ended in 90+10'. Well, this draw makes both teams to get 1 point, Man City remains in the top of the EPL standings. Arsenal dropped to 4th place now, it is under Liverpool and Aston Villa.