Hah, nice analysis!
I haven't watched this yet, but I'm not sure these guys represent much except Penny Arcade.
Mike had burned out on 4E some time ago, so I think he's just looking for something to excite him rather than being attached to the current edition; Jerry seems to have a voracious appetite for all games of all stripes, so your conclusion is spot-on I would say; Scott is an artist by trade and never, ever stops drawing, so in some ways might represent the attention-deficit gamer we all know and love.