You analogy's are very comical DUG although i'm not sure I understand the one about the super bright lights, I don't know how candle light rating compare to lumens but I carry a 100 lumen flashlight and would actually like to buy that 300 lumen headlamp =P, whether you shine that massive light in the eyes of those that pass you is a whole different thing lol.
Roque,
This will help make sense of it. Since we don't like the metric system in the US we use stuff like foot candles and lumins.
http://www.theledlight.com/lumens.html
