Check out my thread(which doesn't have a answer by the way)
In my opinion,in raw vr power, the two gpus are completely identical which is bad.(apart from the 8 gb more memory on the wx9100 there is nothing else).I think that even the 1k price is too much for a vega 56 since amd has a 16 gb frontier edition and a pro duo Polaris 2x16gb at the same price,and here we get less memory for the same price.
In my opinion,who ever is making these decisions that cripple the gpus performance by bios driver and up the market price without giving more,shoud be held responsible as I don't see much competence in such actions.
And I stand behind my word,unless a amd employ doesn't make me understand otherwise.