I think the most advantage Arsenal now have over Manchester City is in the fact that, Manchester City have got more tough fixtures in the coming days than Arsenal. Arsenal have teams like Manchester United, Bournemouth and Everton to play while, Manchester City have got teams like, West Ham United, Fulham United, Chelsea and Tottenham to play. It’s easy to imagine Manchester City loosing or drawing with either West Ham United, Chelsea or Tottenham. These are teams that aren’t doing so well but, would want to make an impression when they play Manchester City and they could. Chelsea already showed strength when they played Manchester City in the quarter finals of FA cup. They lost but, would want another trier at Manchester City and that’s what they will have in the premier league.
I don't see it that way, in fact I think Manchester City and Arsenal will both face difficult matches in the remaining matches this season, especially with the pressure that they cannot lose if they want to remain in the competition for the Premier League title this season.
Manchester United is not an easy opponent for Arsenal, now you can see that this season Manchester United beat the top teams and Manchester United even managed to hold off Liverpool, thus making Lovepool out of the competition for the title this season so I will not underestimate Manchester United.
Likewise for Manchester City, they will be quite difficult against Tottenham. In the last few matches, both Manchester City have looked quite difficult and that is the reason that the match between the two will be the same, especially since both teams have great motivation to win the match.