That's true, even though Manchester City will play at home, we also have to see that the strength of the Arsenal team this season is quite strong and also Manchester City's meetings with the top Premier League teams this season are not that impressive so Manchester City will find it difficult to win this match.
A draw would be quite possible, I also think so and that is quite fair for the two teams who are competing fiercely in the race for the title.
I don't think that the Manchester City vs Arsenal match will end in a draw because Manchester City is a pretty strong team when playing at home. For example, in today's FA Cup match where Manchester City, playing at home, is ahead by two goals over Newcastle United, so Arsenal should be more alert to Manchester City when Arsenal visit the Etihad Stadium. Because it will be Arsenal who will be more difficult to win there, not the home team even though Arsenal is still quite strong so far.