The above statement is an exageration. I guess this person would claim a person who has $2002 is by far richer than someone with only $2000. I imagine the Schmidt hub is a bit better than the other generator hubs. For this tiny bit extra you pay 100% more in price. There are many bicyclists who pay $1000+ to save 100 grams on their bike. Worth it?
I assume Russ is referring to this claim:
... of hub generators and by far the SON is the best:
Yes, the Son is the most expensive dyno-hub I've seen so far. Otherwise, I think both the original claim and the subsequent denouncement are overblown.
The Son drag with the light off is the statistic most commonly used to support the claim this hub is the best. It's about half the next best. However, the difference between 1 W and 2 W is small compared to the power required to move a bike plus load, so that part of the original claim is overblown.
On the other hand, the Son hub has a pressure equalization system no other hub has (to my knowledge) to help prevent water intrusion into the bearings. Partly as a result of that, Schmidt warrants the SON for five years, and expects 50,000 km before service is needed. I don't know anybody else that has that kind of warranty on a generator hub. Doesn't this suggest the Son really is
the best generator hub out there?
As far as double the price, the difference goes down when you compare wheels to wheels vs. hubs to hubs. Wheelbuilding labor, for those who don't build their own, means the difference in cost is about 50% or less instead of 100%.