Larry & Agder,
The Hoosier link shows the two tires & their compounds. Then using Hoosier compound chart, you can see the DBR compound is on the soft side of the C06 compound.
As for the different weights, you can look that up in Jeg's. They have the DDR at 32 lbs. & the other drag radial at 25 lbs.
https://www.hoosiertire.com/assets/Drag21.pdf