But there’s the difference. All but the casual lifters and bodybuilders don’t come anywhere near close enough core stabilization that’s required for competitive level Olympic lifts. Casual lifters usually don’t get anywhere near human limitations, that includes core strength as well and bodybuilders focus on specific physique and usually abs should be visible, but not that overdeveloped. Meaning those aren’t as strong as competitive level Olympic lifter.

Though good point, you’d need to test this theory out with competitive powerlifters and strongman(women) competitors as well. Both use free weights which does require significant amounts of stabilization, strongman(women) competitors would probably have comparable core strength as they do unconventional lifts, which requires more stabilization than powerlifting.