The problem with this is that steel furnaces are just faster, and electric furnaces are the same speed as steel. So Steel Furnaces aren't more flexible than stone furnances, and Electric Furnaces aren't faster than Steel furnaces. So both descriptions seem half wrong.Faster and more flexible furnaces
It really seems like "Advanced Material Processing" should maybe say something like "Faster furnaces, made with steel", indicating they smelt more quickly, but a steel production will be require to manufacture them.
And "Advanced Material Processing 2" should say something like "Large electric furnaces that don't require burnable fuel" indicating the benefit and the drawback of electric furnances.
This makes it much clearer why you would want to research these techs.