When plotting to my HP 750C+ with AutoCAD, my plots are usually under 10MB in size, while plotting with DraftSight they usually run up to over 100MB, sometimes as much as 400MB for the plot.  Why is this, and is there a way to get this to be more efficient?  This is plotting from within the same .dwg file which is only 2mb in size. 

I am plotting to a networked HP 750C+ from the same Dell Workstation.