Each team has losses, both teams have problems with their main goalkeepers, but it seems that Courtois should recover much faster. It is also unclear how quickly Vinicius will be able to return, and for Real Madrid's attack this is too big a loss, although they still have many attacking players. If we compare the form of the teams, I would now give preference to Barcelona, at the moment it seems to me that they are playing better.
Let's take a look after the international match break. There seems to be a 2-week gap for all leagues. The current condition is indeed Real Madrid is losing a lot of players due to injuries. Barcelona may not be as bad as Madrid so they are still quite convincing. But with the current conditions everything can still change, even Barcelona could have difficulties. Currently, there are only 2 teams left that have never lost in the Real Madrid and Atletico Madrid Leagues. But indeed Barcelona is more effective because of its 8 wins and is number 1 in the provisional ranking. It seems that Madrid must take advantage of the January transfer market moment so that they can continue to compete because Madrid is very busy in Lague and Europe.