Finally found the pic I was looking for:



Here you have the hardest (blue/black) that may be a razor finisher and then there are the two soft ones. The one in the middle is a hybrid, you see how it has a bit of the blue vein in there. Those two stones (middle and right) look the most like your stone and I would expect them to be similar in performance, too.

You might try slightly increasing the pressure, or making very light slurry on your stone. I am pretty sure you will see some scratches. On slurry, this stone gives a hazy finish. Diluting that slurry to water will bring the finish more to mirror-like, but the scratches will be (should be) visible.