As for the assessments not on paper but in practice, it is difficult for me to judge, since Argentina does not often play with serious opponents. Yes, their victory over Italy was good (although it was another dubious match from FIFA), but I don't know if it can play several good games in a row at the World Cup.
Well... let's say that we both have clearly different metrics to use when comparing teams. Among the "old stars", one is a legend and the others such as Ángel Di María and Nicolás Otamendi are in great form. Among the younger generation, Paulo Dybala and Lautaro Martínez are winning matches on their own for the team. Anyone who has watched the 2021 Copa America tournament would disagree that they are weaker than Brazil, or for that matter France or England (BTW, they defeated Brazil in the final of Copa).
yee, completely different. Even when Messi was young, I paid more attention to the work of real legends - Iniesta and Xavi. Without them, he is an ordinary good player, but no more, and now his age is making itself felt. Di Maria is good, although Juventus results are bad But I hope he will be in shape for the World Cup. Dybala is Mr. Instability (by the way, he no longer belongs to the younger generation). In general, everything is possible, but every event has chances and I don't see that Argentina's chances are great. And your prediction about the final Brazil - Argentina with a probability of 75% sounds simply shocking to me.