I was attempting to explain in my post why your reasoning is incorrect. For example, an aspheric lens light usually collects a ~30degree half angle when focused. With your reasoning, wouldn’t you expect the light collection to be good in aspheric lights? Well, it is not good because it only collects ~25% of the total light. Djozz’s measurements here support that; just 21% of the total light from the LED is in the beam when in focus mode.