You're right because Manchester City is not going to give up so easily. There are still games left and there will be lots of possibilities for that to happen. Indeed, this is a matter of full points but besides that, the mentality and condition of the players will determine the result. Manchester City with a long time lag will make them improve their performance after the world cup. The difference of 5 points is safe for now, but after the game reopens it is difficult to feel safe.
Remaining 5 points left from Arsenal I don't think Manchester City opportunity back to top standing have been close, still have match left against with Arsenal and become opportunity for Manchester City to reduce points left. However Manchester City have mentality for consistency and last season almost in the same situation drop at early before back to be champion at the end season. No matter with 5 points left from Arsenal because two matches needed for make points close and actually postponed match against with Arsenal will make City can reduce 2 points left if can beat Arsenal.