Complete lights out on what the tier set bonus would have been, either pre-nerf or post-nerf for all specializations. There are zero Blizzard posts stating which version we were voting on.
We could infer it would be a nerfed set, but that was only played going into Aberrus, potentially for 1-2 weeks, not during the entirety of Vault of Incarnates.
Logically, the tier set that we should have assumed to be getting would have been pre-nerf.