Abrams' Augereau: an authentic Garamond?

While weighing my options for a professional Garamond—it may be my personal favorite of all type families—I came across a comment on this website, claiming Abrams' "Augereau" to be "the most authentic digitization" of Garamond's original punches. I started drooling over Augereau, which is really beautiful, but found that it doesn't look very authentic. Somebody on these forums pointed out the capital R is more heavily stylized than the original; I discovered that the arms of the capital W don't cross. What gives?