I'm not expecting the same quality. the knockoffs probably don't undergo the same stress tests that legit products go through. I'm just asking for empirical evidence.

fwiw, I've seen a felt carbon seat post develop grooves from regular clamping. they did a huge recall for it though. quality is relative. what's considered legit in the bicycling industry probably won't pass inspections in the aerospace industry. not everything comes out of taiwan is top notch. at the same time, not everything coming out of mainland is ****. I think there's a pretty large grey area.