I think it's all about time, Mbappe is a player who has very good individual qualities but every player who has just joined a new team certainly needs time to adapt, so does Mbappe now.
And Real Madrid's declining performance this season because many of their core players are injured certainly hinders Mbappe's process to be able to adapt and contribute greatly to the team.
I agree if it is said that Mbappe must work hard especially when the situation of the Real Madrid team is not good like now, Mbappe must be able to become a player who can change the situation.
If Mbappe is able to become a player who can change the situation of the Real Madrid team which is dying like now, of course there will be a lot of praise for him because he is a new player who is in the Real Madrid squad this season. But Real Madrid fans themselves are also very understanding about the process that Mbappe must go through this season with conditions that are not good enough for him. Because any great player will also be quite overwhelmed if his teammates do not have the same quality as him.
At least, Real Madrid are still in a good position in La Liga, because being in second place I think is not a bad position at all. But indeed, if I consider about Real Madrid's luxurious squad, then Real Madrid should be able to be at the top of La Liga, but Real Madrid is still not fully successful at this moment. But even so, ofcourse Real Madrid will still be able to consistently compete with Barcelona at the top of the La Liga standings, and that will certainly happen in the race for the La Liga trophy this season.
Maybe for now comparing them is only enough in the La Liga standings, because for the Champion League standings they are in a position that is not much different and even have the same points. About Mbappe, the fact is that so far Mbappe has still managed to become Real Madrid's top scorer with 5 goals, while Vinicius has 4 goals but I am sure, as this season they will continue to increase for the better, of course.
So far, it's hard to judge. Only 8 games have passed, Real have not lost a single game and are very close to repeating Barcelona's record of 43 games without defeat. I think they can at least repeat this record, maybe even set a new one, but the most interesting thing is that the denouement may come at the El Classico, which will be on the 26th and to be honest it's very difficult to say who will win, both teams are in top condition.