I don't think that this season would be like last season for Arsenal, because they have the quality to keep on winning their matches and finish on first position on the table. I believe that Arteta have learnt from last season, and he is very cautious of himself now to prevent last season from repeating itself again.
Liverpool are also desperate of winning the league and they can also achieve it, if they remain consistent and Arsenal drops point. Manchester city have always been the patient dog, waiting for any mistakes from these two clubs from past years, and before you know it, they have taken advantage of their mistakes, and City will immediately top the table. Assuming it is City that is on top, I don't think that any club can take it from them.
Yeah actually there is a big difference between Arsenal performance last season and this season and they have the quality if wining the premier League this season but the only problem they will have is Liverpool because with the kind performance Liverpool has on this season I doubt if any club will stand as a barrier to their success of becoming the premier league champion and besides Liverpool coach has a big plan of using the premier league as an additional achievement before leaving the club that's why his efforts in making sure Liverpool is always a two steps above every other club is his number one priority.
Perhaps I wouldn't doubt you if you said Liverpool is desperate because all there focus right now is on the premier League trophy and that's there goal, however it would also be very good if they are able to win the league because they have really work so hard for it and unlike other season, this season is actually a game changer for them.