I understand that V2012 introduced some "image dependent" logic in some adjustments. But I believe that logic is only in Highlight and Shadow recovery. (Learned about Laplacian filters in a past LuLa thread).
Simple testing seems to confirm that. Equal adjustment values in the Exposure, Contrast, Whites, and Blacks adjustment will move a pixel from "X" to "Y", regardless of the tones that surround that pixel and regardless of the overall tonal range of the image.
The same is not true for Highlights and Shadows. For the same adjustment values (-100 to +100) , these two adjustments will move the same pixel starting value a different amount, depending on other tones in the image.
But on the same image, the same adjustment value for Highlights or Shadows will produce the same result, regardless of whether the adjustment is made in the Basic panel or with an Adjustment Brush. That is true for Exposure and Contrast as well and "stands to reason." But it's not true for Blacks and Whites, which does not seem to stand to reason.