This is an interesting subject for me because back about 5 years ago, I based several purchase decisions based on this statistic. At that time, Norh was a heavily trafficked Circle (including at the other site, Harmonic Discord) so I figured Norh must be a good product. So I bought their tube CD player (now discontinued) and their tube SE-9.
Then, a short time later, I based my purchase of VMPS RM40s in part on all the good pub that they were getting on AC.
I wonder if you could dredge up the stats for just the last 12 months and see where the top traffic is. I would venture to guess that I have become a customer of that Circle's products as well, namely RWA.