Not enough information, which has always been a peeve with me when researching Brownell products.
Although Fury is labeled as "UHMWPE" (Ultra High Molecular Weight Polyethylene) and Rhino as "HMPE" (High Modulus Polyethylene), those are the same material. It's also known as "HPPE" (High Performance Polyethylene).
The "catch" is there are different grades of these materials, and different manufacturers, and that can make a big difference in stretch, creep, durability, consistency, and over-all strength.
If you were comparing BCY materials it would be a much simpler question. They list specifically what they use in their string materials. All their HMPE materials use the Dyneema brand.
For example, Dynaflight '97 and 8125 are SK75 Dyneema. Dynaflight 10 is SK78 Dyneema. 8190 and BCY-X use SK90 Dyneema.
Sorry I don't have more information.
Chad