I'm not sure if I'm the only person that have notice or it's just recent that I came across this, any season that Real Madrid song win El clasico, they hardly win the Laliga trophy, two season before now they lost El clasico to Barcelona and in the end, Barcelona won the league. That means any season Barcelona is able to win the Laliga, they do also have the power to win them in any El clasico so it's very possible that it's too late that this season belongs to Barcelona already.
However, since Barcelona is not far yet with their points, I don't want to think my theory will comfirm this season, there are lot of things and room for many things to happen. Things like having red card and losing match, things like injuries and many more unforseen circumstances that can happen to teams, it can still happen to Barcelona, Real Madrid or even Bilbao. We just have to sit, watch and enjoy more shows that will b coming from April and May.
I feel it's just a coincidence. That doesn't necessarily mean Barcelona will be able to win the La Liga or even defeat Real Madrid again in an El Classico this season. In my own opinion Barcelona haven't been cohesive enough and with many matches still to play, the title race remains wide open. Barcelona are just toping the standings with just three points and I don't think they will be able to maintain the lead.