Of course Cathcon thinks South Park is better, he's a right winger.
Uh, I love South Park and think it is far superior to Family Guy. For one thing, humor is not all about politics. Also, while Family Guy probably has views to the left of South Park, I can name quite a few episodes where South Park has a liberal position on an issue.
"Medicinal Fried Chicken"-supports marijauana legalization
"Follow that Egg!"-supports gay marriage
"Cartman Sucks" -against the ex-gay movement
"Butters' Bottom Bitch" -Supports legalization of prostitution
and MANY anti-censorship episodes.
Also, at least South Park's jokes are part of the plot, unlike Family Guy's.