Yes, it's true, if this scenario works then of course Manchester City will be at the top of the English Premier League standings. Also, I really believe that if for example Manchester City can take over the top spot, then of course Manchester City will be able to keep it until the end of the season because Manchester City have good ability and quality.
Except, if Arsenal can beat Manchester City then Arsenal will still be at the top of the standings. But I'm sure, if later the gap only leaves 1 point then of course, Arsenal will still find it difficult to get out of such pressure. So that in the end, Manchester City will win the EPL title for the third time in a row.
This is a difficult time for Arsenal, they were very good at the start of the season but towards the end of the season they experienced a little less good times and their mentality is currently really being tested. Now it depends on how Arteta strategizes and the players restore the lost momentum for Arsenal because if this continues, their position that has been held from the beginning of the season of course this must slip out of their hands.