Arsenal to me are title winner already, Manchester city still has tough opponents to play, which they might drop point in these games. But Arsenal has no much opponents compare to Manchester city. if Arsenal maintain this performance and keep playing every games as final they will succeed, i don't see any team stopping team this season to clinch the title.
This season Arsenal really deserve to win the EPL. Arsenal, consistent with young players who are energetic and talented. The main key is the coach who is smart in managing his young players so they can compete with other strong teams and be able to top the standings this season. In the remaining matches, I believe Arsenal are EPL champions. because Arsenal doesn't have many different schedules than Man City, concentration must be divided with other matches besides EPL.
It's not over yet to declare Arsenal as the league winner, for now they are a likely winner because they will play Liverpool, Man City, Chelsea and Newcastle of which the outcome of those matches will be decisive untill Arsenal gets favorable results from those matches before they can be referred as the title winner, of course those matches are winnable, however it's up to the gunners to remain consistent with their brilliant performances having gone far and well in the league, Man City are really fighting hard to catch up with Arsenal, though the gunners are 8 points ahead, however Man City has an outstanding match this will likely reduce the gap to 5 points.