The best high bar at the gym that I know of is a questionable depth 455. So I could do that easily. But my experience is that it wouldn't matter as far as these conversations go. Hell man, my power clean - which I don't train as often or with as much volume or focus as any of the other lifts, and not even close to the amount these people train their cleans - is more than anyone else's at the gym, and more than all but a couple people's squat cleans. Doesn't matter. When your mind is not open to possibilities, there's always a reason not to pay attention to things that cast doubt on your worldview.