Yes, Spain dont play fine in first half, but deserves best result. Tunez dont do nothing, apart of controlling Xavi very well.
Spain has the best medium line probably, but the attackers are very young. Fast but inexperienced, they waste a lot of oportunities. In second time, Cesc and Raul plays great, and open the spaces.
But im with you. Argentina plays nice and effective. I think they will kick brazilian asses!