Originally Posted by jacob_m
Is the award availability the same for all members of all *A FF-programs?
For example does a member of NH Mileage club have the same chance/possibility to successfully book an SK award ticket as an EB-member (and vice vera)?
At least
NOT for UA MileagePlus.

I have experience of it.
I suspect UA limit their members to use his/her miles on another *A partner. (Because then UA have to pay some kind of compensation to their *A partner. Which they don't want to do.)
AFAIK, LH/SK/AC/NH have same availability for their *A partner award when I checked with ANA's Online *A Award Booking System.