A slate of Democratic Party presidential debates are scheduled for the fall. What have we come to expect of the moderators, based on the two debates that took place in June and two more in July? Which of the many questioners have stood out? Another salient query – this one for the media -- is how the two rounds so far this year compare with the crowded-stage debate Fox News hosted for Republican presidential candidates four years ago. Who threw the high heat? Who lobbed lazy softballs? And which approach revealed more about the contestants?