its only cuz its such a big title with so much media coverage. If MW2 or L4D2 stuck to their guns and refused to water down the gore in their games, the classification board would have still passed it eventually because sooner or later, someone higher up than them is going to look at the tax sheets and go "zomg! why are we not recieving $10000000000000 from these game sales?! oh wait, some idiot working for me banned it, time to go fire him!" actually L4D2, maybe not, but MW2 would have definitely made it through no matter what because if it didnt, the government would have had a riot on their hands!