@eiteengo
I'm a little confused here.
My understanding was that the following two were ranked according to their respective evaluation criteria.
(1) OPRNRANK (2) Airstackrank
It was also my understanding that since June, Degen has adopted (1) and utilized it in setting Tip allowance.
With regard to PB, I assumed that either (1) or (2) or both (1) and (2) were employed, etc.
In your view, though, (2) means that (1) was adopted,
I had never heard that information before and had never heard or talked about it from anyone in Japan.
The image is an example of my ranking of (1) and (2), which may be about 10,000 places apart for some people.