Brian, those appear to be carbon as opposed to stainless?
They are non stainless alloys. They are similar to the different "blue paper" Aogami steels ( no.1, 2, and Aogami Super which we call "super blue"). These have nickel added so they are slightly different but should be excellent knife steels. Bill Burke makes some top of the line big $ knives for chefs with this steel. Very high edge stability, high sharpness stuff.
Tungsten not only increases wear resistance with the carbides but it changes the heat treating a bit. If you were a forging knife maker it would help make it more forgiving to stuff like over heating. That isn't an issue with the computer controlled space age ovens Spyderco calls on for the consistency we are used to though. In this case it's all about the grain structure and high performance these steels are capable of. These should be slightly less wear resistant with better high sharpness edge stability than Super Blue working on up to 3V and Cruwear and thereabouts. A bit higher wear resistance than 52100 with comparable stability.
This is of course a generalization. The steel can be tuned somewhat like all steels with the heat treat.