Its legit just derpy show. Simpsons and Futurama share same thing, and that is keeping it safe. Its just legit boring TV series.
One thing Family guy does better is, it never plays safe. It always does something and tries something. You never see that with the "But Meeeeerge" type of plot or friggin spaceship junk of jokes Futurama has or the absolute dumb designs it has. Simpsons has good design it just doesnt do anything good to execute anything, Futurama overall is just terrible all the way.
South Park i think is the best show though, good show, good design, always does something fun. So i like that. If anything i would put that as a mascot show in US because it is great.