The rank varies so much but I can’t get high ranking opponents at all. Was wondering if this was a bug or how it’s meant to be.
The variation isn’t a bug as such but definitely it’s nevertheless “wrong”.
It’s also the reason you can’t get the right fight here as the GBA/GBF won’t sanction with those rankings 
We are sorting this out this coming week together with a few other matchmaking niggles and such like.
Thanks for sharing