I really wouldn't say it's like Brazil. It's a different kind of government their dealing with (Brazil really had more of an insane beauracracy than a dictatorship, sure in the end the pencil pushers were the absolute dictators but not for any of the normal reasons associated with dictators), different set of heroes (V really wants to overthrow the government, Tuttle just wants his AC to work), no strange dream sequences or mystery loves. The only similarity is that they're both intensely British stories that you wouldn't normally expect to sell well in America.