OL + 400m or 800m track work + pullups and pushups would have a much much more positive effect than doing the WODs
Didn't seem to workout for Josh Everett. Early on, yes but not anymore. Of course, Josh may be suffering from wear and tear these days.
One of the things about the games is how quickly you can recover from the ton of abuse you go through. Say what you want, but the ability to have a lot of workout capacity and be able to recover helps.
Another thing that helps is a long career before of athletic activity. Take for example, x athlete and then figure how long they have been doing that and then what they were doing before that as a young'n or kid. Many of those badass crossfitters come from established athletic backgrounds before the 1 or 2 years of crossfit under their belt.