Re: CrossFitters vs Decathletes
Obviously things like kipping pull-ups aren't hard, but how many people can do 40 of them without ever doing them before (especially someone over 180lbs)? I certainly haven't seen many.
And it's not the they aren't going to know how to do high rep box jumps, it's that they'll tire fast on something like that if they haven't practiced them. Upper body stuff like pull-ups and ring dips might tire people even more since hardly anyone has peripheral adaptations in their upper body.