yah, this is the reason why cfls are cheaper oly.. most of them, well, shit, here's an example to explain what i mean.. the number aren't going to be right as i'm making them up out of thin air, so don't pay attention to that part, lol..
with cfls, you buy say one that is 23 watts.. they say right on the box that they are 50 watt equivelants.. this means that they put out the same lumens that a 50 watt incadesent bulb would put out.. therefore the cfl would be about 40% or so more efficient than incadesent bulbs..
but say you have a 125 actual watt cfl, it would use the same 125 watts that an hid uses..
i know it can get confusing at first..
hope that makes sense m8..