They make no sense whatsoever, The Supremes sales are always counted towards Diana Ross, and the Beatles #1s count for Paul Mc Cartney. But with Bey they can't deal.
What is even funnier is that the OP didn't imply that those sales are Bey's, just that they are a part of her career, which is true.
And that is the truth. She worked hard for that group, wrote those songs, made them hits, gave show stopping performances, reason why she is still able to do it while the other two can't even get platinum in the US.
You know it.
I mean the sales are hers, just like they are added for diana the girls will have to deal.