That's what we think, for Arsenal to have what it takes to win the league title this season. It wouldn't make sense at all if, by the end of the season, we learn that Arsenal lost the Premier League title race to any top club over again after two consecutive seasons of failed attempts of having minor defeats and drawing matches like this.
English Premier League this third round was bad for Arsenal after the draw against Brighton. The goal scored by Pedro came after the red card received by Rice and after a defensive mistake. Pedro didn't do anything in particular, he just came at the end of the attack and scored.
Arsenal this season started well in the first two rounds but lost two points soon after. This will cost them a lot by the end of the season..
I don't think it will be only this single draw match against Brighton that would cause Arsenal a lot when there are other possibilities of other draw and loss matches to happen before the conclusion of the season.
Last season, Arsenal had 5 draws and 5 losses; it is very possible they will have fewer or more draws and wins than they had last season compared to this season. Let's expect to see a shocking performance from them. The same goes for Manchester City. Manchester City will still experience draws or loss matches before the end of the season. No team in the Premier League would go unbeaten this season as far as Premier League matches are concerned.