Gene has the recipe right for both steels. One will see more variation knife-to-knife than steel-to-steel in general use gutting and skinning critters.
That said, S30V is "more" stain resistant, has "higher" wear resistance, "better" toughness and can take a more acute edge profile...whether "more", "higher" or "better" will ever be realized by a user in actual practice when the D2 is already so darn good is the knife knut aspect of this hobby. That's the part many of us enjoy...
