Now I have to admit that I'm probably biased toward the Simpsons, but I think that Seth Macfarlane and the Family Guy crew aren't in a place to be taking jabs at the Simpsons. I am a Family Guy fan--I have all of the DVDs and watch them regularly--but I have to say that the current season leaves something to be desired. I feel like seasons 1,2,3 and 4 of Family Guy are like watching seasons 3,4,5 and 15 of the Simpsons, respectively (and by this I mean it went from excellent straight down to mediocre).
Family Guy has put out nearly 60 episodes and the Simpsons have nearly six times as many. There are simply more GOOD episodes of the Simpsons than there are GOOD episodes of Family Guy. Until the FG people can put out 100 decent shows (which would probably take 150-200 episodes), Seth et al. are in no place to trash talk.
-nick "...After all, isn't there a little bit of Ooter in all of us?"