I think an underatted team was Ac Milan from 2003-2007, they had a lot of talented players. They had such a great defense and offense. They had superstars all over with guys like Pirlo, Gattuso, Nesta, Cafu, Dida, Kaka, Shev,Crespo. Spain struggled against Italy a few times (2008 and 2012) which shows that Italian football style would have been an issue for Barcelona if they faced them more often.