I hope Argentina gets knocked out of the Group stages. I don't want Messi winning the world cup to be honest, not in Brazil. As much as I love Higuain he doesn't play for Real Madrid and with only Di Maria being the only Argentinian player in Real Madrid it isn't enough for me to want Argentina to win it.
Marcelo means to me a lot more, and I hope he wins it at home. He deserves it considering how fantastic of a player he is and how awesome he has worked. Him or Ronaldo, one of them deserve it for sure more than anyone else on the planet. Casillas, Ramos and Xabi have both won the WC, so they already cemented their place in history and I don't care for Benzema to win the WC and Varane will win the Russia or the Qatar one, no problem.
However Portugal desperately need a striker, they can't continue like this. Also, Brazil need to find some harmony, their game is still erratic and without organization. Scolari tries so many different options and Hulk still stinks up the place.