If it is like any other engineering project there is a blend or balance along with some price manipulation. If you look at Warbonnet as an example he manipulates fabric weight and layers. I do not recall his suspension options. Hennessy manipulates size, cordage, and construction techniques. He probably does that as it is easier when buying large quantities of cloth. Each maker has his tradeoffs depending on material availability.
FWIW I would think the data you are asking H for is something he would not want to share for a variety or reasons.