for now the quality of the squad for Barcelona and Real Madrid is very different. In my opinion the Los Blancos squad is superior to the Blaugrana. At the moment they do have the same points, but I'm sure that on the way later Madrid will again be able to take the top spot and at the same time will widen the gap with its nemesis, moreover Karim Benzema and friends will still have a chance during the El Clasico match later. But it is possible that there will be a quicker change at the top of the standings, because at the weekend Real Madrid and Barcelona will face teams that are quite balanced for them.
People are overreacting to Real Madrids success last year, and I understand why that's happening. Last year they had nearly no opposition in La Liga and dominated it, and they played some very good games on UCL and won, specially their comebacks and last minute goals were superb, but they didn't dominated any of their opponents at all.
This year, people are expecting the same thing, it's nearly the same team and they have a good roster. But the difference is that their team is one year older, benzema and modric and kroos are all a bit older, and Barcelona built a whole new team basically, most players being younger. So, it's not as easy this year as it was last year.