Those elements had SERIOUS heating pattern issues. Medium, which is the heat usually used for baking griddlecakes, only heats a small loop in the middle which is not going to spread heat evenly across a griddle or skillet. Maybe with the lower wattage, medium high was needed for the task. They were a far sight faster than Frigidaire's original surface units from the 30s where they recommended having an electric tea kettle to use for boiling a small amount of water. The original elements were so heavy that recipes for the range suggested that if an element was used to boil water for coffee, once it was switched off there was enough heat left to fry bacon and then eggs.