I'm not even convinced that we see 1.) everyone whose quiz gets scored in front of the group or 2.) the right order for those that we see. If they have other content for the episode, I'm guessing the more "boring reaction" shots are edited out. Alex always looks like he couldn't care less - very molely, where Mark looks like he's about to have a coronary - also in his "character" isn't it. And Clay - his quiz doesn't seem to get scored as often as the others - very curious.