At this stage of the league, that's almost irrelevant. Last year, Madrid also started ahead of Barcelona, and it wasn't until well into the second half of the league that Barcelona managed to take the lead. So I think that until at least the 20th match or so, we won't be able to speculate with any certainty about how things will turn out.
In fact, when the season starts, any club that is doing well, to me, does not count because when you look at last season, I did not even expect much from Real Madrid. After all, you and Barcelona did better even with their challenges, so these are all part of the reasons why people need to pay attention to people leading in the middle of the league, because that is like when most of the clubs will be running out of options. After all, participating in different leagues can also be exhausting.
So from the middle of the season, the top three are always among them that will survive during the season, so I don't even expect much from Madrid this season. Don't be surprised to see Barcelona still taking the lead this season, because Barcelona is in form currently.