Brazil will definitely win the world cup due to the fact that they're in Brazil where they haven't lost for ages. Neymar will be key making all the runs and his fair share of the goals but I don't thing he'll be top scorer. The main scoring will be down to Hulk and Fred. Defensively Brazil have Thiago Silva. That is itself key. David Luiz is OK but can get himself sent off easily if he tries. Personally I would go with Silva and Dante as the CB with Alves RB and Marcelo LB. I easily stick with Julio Cesar in Goal.