WHEN I think of it, most exposures are to the right, 1/3-1/2 over,since it seems easier to recover highlights than shadows and noise. I only ever shoot HDR,when there is a room with a "view",and the dynamic range is too great,even for a RAW capture, then I'll -2,+2 and right on!
To me, a stop over or under in RAW, is like a 1/3 or 1/2 on the old negative film, hardly noticable,
Rich Franco