The Watergate saga started with a crime which developed into an investigation .  This Grand Jury differs 180 degrees from Watergate in that it is an investigation looking for a crime .  This is also different from the way grand Juries are used across the US in criminal cases .  First there is the crime and the GJ is  convened to investigate who might be charged.  In this matter , the crime has not been identified by charge convening the GJ.   Thus the proceedings seem to  be more of a persecution than a prosecution.