When people talk about Arsenal and winning title race they talk is as if Manchester City is immune to losses. It looks as if it is only Arsenal that cam lose match. But that is very wrong because Manchester City is very beatable by any team. So, I doubt that Manchester City will remain consistent or will even be able to beat Liverpool.
The league race is open to everyone but Arsenal remains the favourites.
Yes, City makes some mistakes still despite being the title holder. They might be consistent but they still drop points in certain gameweeks. If Arsenal maintain better consistency then Arsenal will be giving City a hard time till the end for the title race. Still lot of matches to play and lot of gameweeks to go through so anything can happen. Can understand why they expect City to be at the top again as they have the history of being consistent even though they are behind and come out as a winner by the end. They don't expect to change that but many of us believe that this time Arsenal might have a good shot at the title.