One Trophy will complete the privilege for Lionel Messi, that is the World Cup Trophy. this reality will be closer to becoming a reality as Argentina needs two more wins to make Lionel Messi dream come true. croatia and argentina have star squads in the bodies of these two teams where they will be able to provide a more fierce game when they compete in today matches.
I even agree with you that in today match Argentina and Croatia have a 50:50 chance where Croatia will be an opponent that is difficult for Argentina to beat and vice versa. we have to see these two teams in their efforts in the previous matches they were too strong against the opponents they faced.
I also think, that Argentina is not the strongest team of the remaining for nations that are still in this world cup. For me France is the big favorite. As you already said, Croatia is a very strong team too. They have a lot of quality in their squad and they also play with a lot of passion and conviction. Their greatest strength in my opinion, however, is that they are very good at defending and even if the opponent is making massive pressure towards their goal then the croatians still remain calm and are always defending well.
If Argentina wants to go through tonight, then they will need more than just Messi. They will need a good team performance.