My two VP9s can shoot roughly a 10-round group into 1.8" CTC at 25 yards. I've seen a group or two slightly better than that posted by others, but I haven't been able to match it.
My Glocks can't compare to the H&Ks without a re-barrel and my M&Ps were 6" guns. With a fitted barrel, my example of a Glock can shoot with the VP9s. I should've mentioned that above in my comparison, as that is the pistol I shoot regularly. I still drop more shots.
However, my CZs can roughly equal the H&Ks out of the box, so, weasel words, "it depends" on what gun the H&K is being compared to and that is the point I was trying to articulate.