Well, having just finished watching the two episodes presented during my overnight shift at the radio station, here's my two cents:
#1. For sheer entertainment, Groucho's show was superior, but I think "Two-fer" had the superior GAME.
#2. I'm amazed at how stubbornly G-T kept using the "one contestant gives a general answer and the other gives a more specific answer" line of questioning for various rounds, since NOBODY on either episode seemed to have a firm grasp on what Herb was asking them. (Steering clear of any spoiler info, I found myself saying out loud, "There's no reason you should be having this much trouble" during one particular question.)
#3. I'm in the "I like Herb" camp. And for reasons I can't quite pinpoint, during the home movies bit at the beginning of the second episode, I kept thinking "Letterman." (Perhaps it's just the mutual affinity for stock footage gags.)