@apricotblossom
Nope, you're right, it's not the same as knowing.
Just as unescorted can't know for sure either - both of you are making your own suppositions for others to draw their own conclusions from.
However the facts from Scotland, where schools from more disadvantaged areas had estimated much higher grades over previous years compared to schools from other areas, seem fairly clear cut to me.
That said, obviously private schools benefited more from the algorithm, as far as A-Levels in England went, which obviously was not fair either.
I don't know what the answer is or how they could have done this fairly for everyone (as even exams have their biases) but it isn't wrong to say that there are losers now, after this u-turn, just as their were losers before it.