Arsenal currently have the biggest opportunity, but they are still in a very vulnerable position to being replaced by Manchester City. They also failed to get 3 points from Anfield last night. It's not bad to get 1 point at Anfield, but that makes their position even more threatened. BTW, it's not only you who expect Arsenal to win the EPL title, there are many people out there who have the same hope because it's been a very long time since Arsenal won that title.
I must say I am disappointed at the results from Anfield because it has made our title race more stiff now. Like you said, it's been a long while since we won the title and I would love to see us win the league this season. Let's just hope for the best and prepare for the worst...
Although Manchester City can be very shrewd to play well to meet up with Arsenal or taken advantage of or winning this season premier league but it will be very difficult, because arsenal still never give up to lose the position because they haven't taken the league for a while, Arsenal really tried their best in the match against Liverpool. Their first match Arsenal won and the second they decide whether they win the match or nobody wins.
Liverpool also put on an unexpected performance because I thought they couldn't beat Arsenal because some of their players are in injury and most of them haven't been playing well this season. However, they played well and put pressure on Arsenal to score more goals in the second half of the game because, if they didn't, Arsenal would have won the game. I think Liverpool still has a chance to play in the Champions League next year.