lol. Couldn't help noticing that you turned to 'soccer fan' mode, as in 'this is how it is going to be'.
Brazil is a bunch of star players, but that doesn't make a good team. They have shown that for the last couple of years. Brazil is not hungry enough. They think they're soooo good. Once that arrogance creeps in it is very hard to overcome. (Roughly, as Real Madrid goes, so goes Brazil...)
After Germany, which lacks quality, the team with the biggest 'home field' advantage is Holland, coached by none other than van Basten. This guy is like Cruyff. Whatever he touches turns to gold. Van Basten's Holland did not lose one game in qualifying; beating the Czech Republic twice! Not even half the quality of Brazil? Robben may be the best left winger in the tournament. Van Nistelrooy is among the best finishers. Haven't seen Van Der Vaart recently, but if he can get over his tendency to hide, he could be the next general. I doubt it, but he has the potential.
And don't underestimate the orange army... Unless Holland plays Germany they're backed by a huge home crowd. A big reason why Orange Clockwork, traditionally, does well in Germany: lost to the host in WC final 1974, and won the EC in 1988. Try beating that.
Italy is always dangerous and this could be their next '1982'. But I don't think so. There is something about location and climate. They last won in Spain, pretty much home climate.
Look where Brazil has won its last three: Mexico (very hot), USA (heatwave type of summer), S.Korea (no idea about the climate, but it was only familiar to S. Koreans). I don't just mean temperature; also humidity and barometic pressure.
Little things like that make all the difference. Just like a soccer ball has to be the exact right tension, or it is just not the same...
Last but not least, the refs. Brazil is not going to get the calls they get in other parts of the world. If a Brazilian player is offside in Europe, especially Northern Europe, he's whistled back. Period. They won't get the respect and benefit of the doubt that they get in other places. I don't even want to begin to imagine how many games are decided by different 'interpretations' of the offside rule, but they will not work in Brazil's favor this time.