Yandex has over 80 DNS servers located in different cities and countries. Each user's queries are processed by the server closest to him/her, that's why sites open faster with Yandex.DNS in "Basic" mode.
You read the Website and pasted in their text. Good work! Here in the south west USA, I think I'll stick with Norton's Policy 1. Results are about the same as when I ran the benchmark on those servers last year...
I'll stick with my ISPs DNS servers. The Norton ones are too slow here in Oz and same with Yandex.DNS.
The problem is, YandexDNS blocks a few legitimate pages, just like FamilyShield, which is quite annoying, nevermind OpenDNS is faster for me.