Having dealt with both Xestr and QS I can tell you 100% they are not the same person...
I'm pretty sure he was just trying to make a point. The difference is the post that was made by KoS, deleted and made again by his alt is they were the SAME EXACT post. This happened within minutes, I just happened to be browsing that thread at the right time.
Xetsr enough with your detective work where do u live mate in US? I'll see if I can get a meeting set up so we can out to lunch sometime!