Klokov has been basically "playing around" with CF workouts the last two or three years, almost making them seem like a goof.
WOD of 30 snatches with 135 for time (he accidentally only did 29. Finished in 1 minute 11sec, faster than Froning has. They've also both done it with 225 pounds, Klokov still finished faster):
But if we're talking crossover, I'd be more interested to see what some top lightweight strongmen competitors could pull off in a straight-up CF WOD, since they generally train for more diverse events and have a bit more of an anaerobic endurance element (from loaded carries and other "for time" events).
^ Dude's 5'9", competes at 175 and walks around 185ish, right around the average size of CF games competitors.
I wrote some pros and cons of CF training here:
"Stole from CF" would imply that CF created certain concepts, which they didn't (other than kipping pull-ups, supposedly). They popularized some techniques.
But like I said in that article, the idea of being well-rounded, training for different abilities (strength and agility and speed and power, etc.), and mixing training implements within a session (bodyweight exercises plus free weights plus medicine balls/odd objects plus conditioning/cardio) has been around for literally about 100 years.