I think I already saw this mentioned somewhere, but there is a difference between hitting the side of the S6's rubber handle and hitting the side of the RD7's tang. The impact and shock that the RD7 suffered is worse than an equivalent blow to the S6's rubber handle. Not quite an equivalent demonstration of toughness on that test. Oh well. Both knives seem like they will take a beating, and I love my Yard knives as much as my Ranger knife!