I think Real Madrid has not proven that they are now better because we have not seen the consistency of neat performance and also a combination of their two mainstay mbappe and also Vinicius.
Instead I think Barcelona this season must be recognized by all its changes and Hansi Flick as their new coach is successful enough to make a much better change for the performance of the Barcelona team even though they often cannot maintain their performance consistency.
Overall Real Madrid and Barcelona have a fairly balanced strength this season so that it is possible to occur in fierce competition in the race for the title, and the KUA of the team also has the same problem that is not able to maintain consistency so because it makes all possibilities possible for Barcelona or Real Madrid.
This your assertion of you thinking that Real Madrid has not proven to be better because you have not seen consistency in near performance simply shows that you are not watching Real Madrid games. And you saying Mbappe and Vini hasn't linked is further proof that you are not watching the team play, because if you were watching, you will definitely notice the difference between them now and the beginning of the season and also Real Madrid now and the beginning of the season.
Yes Real Madrid is at the top of the standings in La Liga now, they have 4 different points from Atletico and 7 different points from Barcelona. It means they have started to be consistent. Indeed at the beginning, Mbappe and Vini are not compact and maybe a bit selfish with each other, but Anceloti has know how to manage player like this, so that he separated them, and play them in different matches. Yes I consider this is the best performance for real Madrid, and bad performance for Barcelona because they were defeated instead position from Atletico. Actually who are not inconsistent for this session is Barcelona, not Real Madrid.