Because including the burger would be considered "too much."

Last week we lamented a study suggesting Southerners have too many pill bottles in their medicine chests.  From personal experience, one reason, we ventured, might have something to do with the mouth-watering sugar and fat-laden regional fare.  Market research at a major fast-food company must be showing sustained popularity for that diet with the rollout of a new sandwich that would make a cardiologist shudder.  I wonder if Joey Chestnut could tackle 60 or more of these babies.