Functional strenghts for knives are the weakest points.Stronger parts or even more parts do not mean stronger,more durable knife.It is hard to evaluate without testing both knives for the same task.For instance ,early lockups on XM-18 are lateral,functional parts in line with each other,blade tang and liner.Snapping when flipping and the small area which is liner and blade tang touching can easily crack under hard flip or constant hard opening.When 50-70% lockups have more surface locking so cracks are less likely.Not saying Hinderers crack but simple engineering says early lockup means,weaker point of parts locking.
Again,both are great knives with small but important differences which makes me choose CRK over RHK if I had to pick only one to keep.Cheers.