I also have demonstrated this through doing relative knot strength tests.
This test can be done with very little stuff and I am 99% sure that you have it all at your house right now so you can test your own knots.
Here is a page I have had on the net for some years now explains the test. I update it periodically with additional sample results I have done. The page has lots of links to various knots detailed on various websites. Most of the websites also have details to lots of other Knots that you might want to know about. ...... Or Knot.
Knot Tug of Wars
disinfect your wading equipment. wash boat. disinfect livewells / sumps, wash ur dog