Maybe they have, but Arteta also knows that this competition won't be decided between Arsenal and Manchester City, but between the long fight between the clubs with the other amazing opponents. The aftermath has to wait.
For me, if I have seen the progress of this season, of course there are still two teams that are closely linked to each other in the fight for the title this season. And that could be between arsenal and Manchester city because last season these two teams provided quite strong competition until the end of the season in the race for the title. It could be that this season they will do it again because these two teams are equally strong and still have a pretty good run so far. It could even be said that they will swap places again in the coming weeks.
However, for arteta, he certainly knows how to beat Manchester City this season, so arteta has a better chance of maintaining Arsenal's concentration in the upcoming matches. In the premier League, only manchester city is strong enough because they have registered themselves as the strongest dominant in recent seasons.
Last season I think it was an ending that most of us expected. This is what makes Manchester City so incredibly strong because they know how to deal with pressure like no other team at the moment. They have the patience and the quality to come back from difficult situations. Right now they seem to show some weaknesses that nobody expected, but I am absolutely sure that they will soon be back on track and still, the champion isn't decided by a losing streak of two games. Just look for how long Arsenal led the table last season and Manchester City kept up the pressure nonstop. They won game after game and Arsenal felt that they can't have a single failure or Manchester City will be ready to take it and attack whenever it is possible. The fact that the game now went in favor of Arsenal is good for the whole league I think or otherwise it would have become too boring too early. Now I think there is an open race for the top that makes the whole league more attractive. Even though I am a Manchester City fan I prefer to see them lose games at times as well.