Now to examine the frankly obvious pairings that were made between the two families equivalents. Homer and Peter obviously worked well, and managed to get into some actual situations that made me laugh, unlike the other pairings. However I do have to say that when compared side by side Homer seems much less intelligent despite Peter being the one that is supposedly mentally disabled. Marge and Lois had practically nothing to do except that "passive aggressive wives that pretend to like each other thing" that TV writers always come up with. I thought Meg and Lisa was legitimately funny, both of them being neglected children but Lisa still finding Meg disgusting and Meg latching on to any kindness shown in a desperate manner. Finally, Bart and Stewie?? OK, obviously these are the characters that are most dissimilar in terms of personality, Bart's probably more like Chris in terms of being picked on, being a slacker, etc. But these are both their respective shows most heavily merchandised and at this point probably most loved. So we get some interesting juxtapositions of what Conan's buddies in 1990 thought was badass and what Seth MacFarlane in the 2004 reboot thought was badass.
Overall, it's probably the best episode Family Guy has had since the 11th Season, and if it was technically a Simpsons episode and if I were a Simpsons reviewer I'd probably give it an A+ after wading through so much schlock. It's a good episode and I recommend you watch it. It does drag on after the 30 minute mark and in all honesty they could have condensed it but who knows, I might be wanting more. I can't say I'd be excited for another crossover, but give me a few years and I might start craving one. In the meantime, why not do a crossover with Bob's Burgers? That 5-second cameo was one of the funniest parts of the episode.