Watching MG/HS Hour, you wonder if Jon had ever watched an episode of the Match Game or Hollywood Squares before, or ever realized what made those shows successful. These are supposed to be funny games. And the sort of humor was not the rather tame wordplay and puns that Jon tries to do on every single episode.
If they had to have two hosts for this show, the least they could have done was find someone who had a similar sense of humor to Gene's, to at least make the show flow a little better tone-wise.