Ah, clamping. You said campling.
I'd say these are a tad more secure feeling. But then again, I was not the first own of the AD2000. The original owner could have made it a little more loose fitting. Could also be because this AD2000X is quite new. With a little time maybe it'll slightly loosen up. I like the clamp, personally. What bothers me is pressure on top of my head. Audio-Technica's wing system puts practically zero pressure on top of my head. Feels good. Very good.
I didn't do a direct comparison so I am not sure how similar they are. But I do know that the AD2000X didn't really sound 'off' at first. Though I do think it probably offers a little more midbass impact. That seemed noticeable. Looking forward to seeing some graphs comparing the two. I'm curious about how accurate (or inaccurate) my indirect comparisons are.