The gap from Arsenal to Manchester City is secretly already 5 points. I actually like it quite a lot. Newcastle is also only 2 points behind, but they have played a game more. I don't think Newcastle can hold on to this 3rd place. And whether Arsenal can continue to maintain the high level is also the question. Brighton in particular would not be thought to be in 7th place after 14/15 rounds. United 11 points behind Arsenal, it's almost impossible to close that gap. Arsenal's next game is at home against fellow townsman West Ham United. We shouldn't expect miracles from this either.
If arsenal have been very consistent with their performance from the beginning of the season till this time with no struggling I'm very it is still possible with them to maintain their performance. The premier league is between arsenal and Manchester City, that's the only team that can take arsenal position.