Very true. The first few seasons aren't that great, but eventually they realised that politics is hilarious. Nowadays, South Park is smarter, faster, funnier and far better written than anything Family Guy has ever come up with. At the same Family Guy was making jokes about wild firetrucks, South Park was destroying Scientology, Tom Cruise, R Kelly and Isaac Hayes. And they still find time to have gross out humour. It's Genius.