Man City and Arsenal have both been playing consistently and it looks like both teams will continue to win until the season ends, which means Man City will emerge as Premier League champions this season.
Manchester City have advantage and control the race with Arsenal but it is an assumption only. They only actually have advantage in this race if they can win their suspended match, then with same total matches, we will see what competitor will have more total points. If Manchester City can win their suspended match, they will actually have an advantage against Arsenal.
The tough opponents for both of them are Tottenham and Man United but if you look at the current condition of Tottenham and Man United, I think both Man City and Arsenal will have a big chance of winning.
Man United are completely dilapidated now, so they won't be a threat to Arsenal. Likewise with Tottenham, although their condition is not as bad as Man United, but their performance has declined at the end of this season, so it is very likely that Man City will win this match.
With some few matches left, 3 for Arsenal and 4 for Manchester City, many things can happen. Manchester City will win Premier League if they win remaining four matches and I believe they will be able to do that. However if Manchester City lose points in four remaining matches, Arsenal will have chance to take the trophy.