Chelsea and Aston Villa has similar points on the table and I can't even differentiate their performance but I think Aston Villa are sneaky team that make way even when things are difficult for them. They just humiliated Bayern Munich in the Champions League and draw almighty Manchester United in their last game and as for Chelsea, they are busy making more goals than what they have concede, only their next matches is going to determine who is going to last at the top.
By features arrangements, Aston Villa might have a way to stay above Chelsea because I'm not sure how Chelsea are going to win Liverpool that is fighting to stay ontop of the table, any small mistake from this play will not only drag them from there, they have to come down to stay with Aston Villa hopefully Villa don't win their next matches again but sometimes, things don't go as expected, minor teams don't finish from surprises.
It was surprising to me how Chelsea were able to show the same results as Aston Villa and even managed to finish above them due to a better goal difference. Aston Villa lost a little ground due to the last two matches, when they first failed to beat Ipswich, and then lost points in a draw with Manchester United, and thus allowed the leaders to get away, now the advantage of Liverpool is 4 points, this is more than the distance of one victory, it looks like in the end for Aston Villa it will all come down to the fight for the top 4.