Originally Posted by
Nyalia
We have noticed no difference in quality gains between using HQ and NQ items. We've had 90/100 from all NQ, and we've had 20/100 from all HQ. It's very, very random, and there's no indication that HQ affects quality gains.
I believe HQ just gives you double experience, just like all turn-ins. Now, if only the exp gains weren't trivial... double nearly nothing is still nearly nothing. I used to try to give mats to lower level crafters so they could get experience from the turn-ins, but then I looked at the numbers, and there's just no reason to bother.