Why do you think that?
Here is the RC.com thread, which has a lot of good info.
Those who are saying "It failed at X, that is still pretty strong" are desperately missing the point. The point is this company told you it was rated to Y. Their manufacturing process is inconsistent enough that there is no way to know what you're getting.
Pull testing is a joke, especially under these circumstances. Having a consistent process and testing a representative sample to failure is the only way to be trustworthy. When pieces fail they should fail considerably above their rated strength, and with a consistent failure mode. Multiple failure modes at well below rated strength... how can anyone argue that this is not a huge problem?
It is a shame, because Aliens are so nice to use, but they plainly can't be trusted. If you are so in love with them that you want to continue using them, that is your business, and I do not criticize you for it. But stop spouting horrible faulty stupid logic.