The season is still young to want to predict who wins the EPL title. I understand that Arsenal’s consecutive defeats against West Ham and Fulham, might have made people think that Arsenal have lose ground in the title race. But with 18 games to play there's still time to rectify the situation. Most people are now tipping Liverpool and Manchester city to win the title, because they have experienced managers, game changers, world class players and they’re the only teams to have won it in recent times.
Although it is still quite far away to say with confidence who will be the champion but with some of the situations that are happening at this time actually in my opinion it should be for the current candidates to narrow down because currently only 3 leading clubs such as Liverpool, Arsenal and Manchester City as well as a dark horse club that is still troublesome like Aston Villa who still have control over their performance.
This is actually still enough to be used as a benchmark to see who is suitable to become a trophy holder this time and the probability of Liverpool and Manchester City is currently the strongest.
Arsenal have always been good at breakthroughs but until now Arteta has still not been able to improve the situation at Arsenal who still have problems in their performance differences which are sometimes like a roller coster. Now they are also having the same problem with 5 matches the result is 1 win, 1 draw and the rest lose. If it continues like this then slowly they will retreat from the championship competition just like last season.