Well, after yesterday's completely terrifying beatdown of Brazil by Germany, I have no clue what will happen today. I think Holland has a more complete team, but Messi is the best in the world (or top two). It's going to come down to how often Robben gets away with diving versus keeping the ball away from Messi.
NED 3 - 1 ARG*
* Not to be taken seriously, unless it happens.