The CRKT models that include the AutoLAWKS system have to be close, in the sense that there is a lock and then a lock that locks the lock. In that case, it is very difficult to force the lock. That said, I know that some of their Chinese-made models feel weaker to me than the Taiwanese versions.
The CRKT M16-13Z made in Taiwan that I own would stand up to anything that a fixed blade knife would, I believe.