First, I would like to say that Chris builds an excellent knife. Certainly one of the best, if not THE best production knife in the world.
Lock reliability is more important than lock strength by a large margin. I have never heard of a CRK lock failing. IMO, CRK knives are strong enough to do anything that you would need of a heavy duty use knife.
Secondly, Spyderco's tests are not an industry standard
Spyderco's tests are for Spyderco's own Quality control. We establish how strong we want a knife to be and we test regularly to make sure nothing changes. If a vendor changes a pin material, our tests would indicate a change.
I'm sure each knife company has their own method of testing their products to ensure safety.
sal