Every match in the Premier League is a big game because you are not sure of taking the whole three points until you have played your match and won. Arsenal is already in the Premier League title race because they are in the third position in the Premier League table, with 43 points and two points behind the Premier League table leader.
I agree with what you say. The English League is really interesting to watch because they have an even level of competition between teams. Every English league match is very interesting and I admit I know more about the names of football players in the EPL than in other leagues. But even so, Arsenal still has a chance to win the title because they are only 2 points away from the top of the standings. The top 5 positions can still change because there is not that much difference in points.
Before you conclude that the two points difference away from the leaders of the premier league table currently is not much for Arsenal to make up for in oder to get to the top of the table, you have to first consider the top two teams, their ability and their next fixtures as compared to that of Arsenal, will Arsenal's next fixture allow them cover that gap, and will the top two teams be slack enough not to broadening the gap??
Arsenal is currently not consistent as they were earlier at the beginning of the season so it's very possible that as small as the point gap is from the top, they may not be able to cover it up and displace the team at the top of the table, I know if Liverpool losses their next fixture then Arsenal may have a chance at the top of the table but just before then is Manchester city who Also wants the top spot too so I will rather keep my fingers crossed than been to optimistic about Arsenal as they have done something similar last season.