And I'll say it again; if the description of the way Cartel measures the spine is to be believed, then the number on the shafts is not a spine rating...
For the Triple range of arrows the spine is determined as the weight required to deflect the shaft by 20mm with the shaft supported at points 500mm apart.
This would give a set of numbers with *increasing* values as the shafts get stiffer (more weight needed to bend the shaft).
So the numbers on the shafts
are not the spine measured by that method.
IF they are based on a spine definition at all, it is most probably one of the same sort as Easton's (deflection distance of the shaft). Unless they're doing something odd, like starting with a 1 kilo weight and seeing how much weight they have to take away to achieve the desired deflection. I can't see that, somehow.
Worst case scenario, we're not even getting silence, we're getting disinformation...