Yeah the cat's been out of the bag a while about the bulbs that use a blue coating to make the bulbs appear whiter. The majority produce less light. And those that manage to produce equal or slightly more light have a color further up in the spectrum that can't be fully utilized by the human eye. So even by producing more light, they still give you less vision.
There's a lot of info about bulbs at
http://www.danielsternlighting.com/