well the two samples I saw were a spectra "climb high" daisy and a BD nylon daisy. I did not ask what the sample size was in the testing. The spectra daisy was completely severed at the bottom loop. The nylon was intact, but several of the bartacked stiches were ripped out. I think the test was more to demonstrate you shouldn't fall on daisies, even a very short distance. However, the theory is that spectra's low melting temps are the possible cause for the failure. The test was a factor 1 fall taken by a 80kg weight, so there would obviously be some human body shock absorbtion in real life. But still...