My initial thoughts on this Final. Great matchup and storybook ending to this World Cup as the defending Champion with the greatest player of all time faces off against Spain. Spain the country that Messi spent most of his life in since he was 13. Spain the team that has Lamine Yamal who Messi bathed as a baby and now they face off against each other. You really can't make this up.
IMO, Spain is the better team with quality all over the pitch. However, their goalie Simon is a little sketchy. This game is going to be greatly influenced by the referees in this game. Argentina plays aggressively and at times pretty dirty. If the refs allow that physical play to happen, Argentina will be able to disrupt Spain's dominance in the midfield. Uruguay played dirty kicking and hacking Spain all game and it disrupted that flow to Spain's game. If that happens, this is going to be a tough close game.
If the refs call the fouls and cards players appropriately, I don't see how Argentina's midfield can match up to Spain. This will isolate Messi up top and will force him to fall back deeper to get involved in the attack. In turn that will tire Messi out. Will Argentina play defensive against Spain and look for some Messi magic at the end? I have no idea. But if Argentina plays an open game and the refs don't allow the Argentina players to mug Spain, this could 3-0 result for Spain.