Old family guy is better because it isn't as modern so they don't have to be careful on what they say to offend anyone and end the show after the first season and they are trying to figure out what it is as a show so it has more interesting stories and after season three the show overall got worse over time with the exception of a few episodes so there is your proof on why old family guy is funnier and overal better and if you want more proof go to r/oldfamilyguy