Are fans of this automatically fans of American Dad?

No.

I THINK SO...I AM ANYWAY.

I love both. I prefer Family Guy though.

American dad was written for the times and has political overtones. I actually watch AD more on Hulu than FG but they are both brilliant shows.

I prefer American Dad over Family Guy. Stan Smith is my hero.

I prefer the characters of Family Guy but Roger from American Dad is hilarious.

I haven't watched Family Guy in Years. Because i got sick of Mag being a punching beg every week. But i do watch American Dad Religiously.

Nope, I love FG, I HATE AD.
Similar humor style, totally different delivery.