One statistic I didn't see in this was how much IPv6 traffic was translated to IPv4 or vice versa. On the IPv6-only SSID, was the service IPv6 end to end, or did it simply "work OK" with a CNAT? What I would prefer to see is the service the party is going to actually use IPv6 and translation therefore not be used very much - which is what I hear from T-Mobile about its 464XLAT implementation. From the dual stack network's behavior, I would conclude that there is probably a fair bit of translation.