Gonzales, as WH Counsel, did the vetting that Miers did, as WH Counsel. The activity comes primarily with the job title and function.
... why are you intentionally taking such a minor point as if it is important, and blowing it all out of proportion.
It goes to the matter of credibility. Intellectual honesty requires that participants in debate work from some agreed base, which is usually facts. When one side in the debate is persistent in using debunked facts, it weakens that person's standing in the debate.
A good advocate would concede the point, if not finally, at least tentatively until other evidence is available.
Speaking of Gonzales, do you see him as the next nominee? I have been predicting Gonzales' section since Roberts was nominated. If it's not Gonzles now, it will surely be for the third opening, if there is a third opening.