Seriously. They aren't worth a shite...the specs are off in almost every aspect from what it says on the shaft, because they are mass produced and offered as a stock shaft.
Let me put it this way...it's like you getting a care package for a tournament, where it is advertised that a sleeve of ProV's will be in the package. You find once picking it up and hitting them they aren't actual ProV's, but X-Out's.
not exactly correlative, but you get the point. The weight is usually lighter than specified, either stiffer or regular than specified, and less torque than specified. They are just off-brandish. Doesn't matter to some people, but people who are extremely particular like me it matters too.