That may well be true. But I got my Spyderfco V sticks and anything that don't sharpen on that (or fit those two angles that come with it) is not for me. If the blade is a soft steel it will re profile quickly anyway.
I generally sharpen my super steels at 30 degrees inclusive. It's easy to keep them sharp with the Sharpmaker's 40-degree setting, basically making a microbevel. Softer steels do sharpen more easily, but super steels are easy to keep sharp with a microbevel -- and they hold an edge much, much longer and can hold a more acute edge than softer steels for better cutting performance.
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Hardness is not the exact same thing as wear resistance, as just noted, but steel alloys run harder will usually have better wear resistance than the same alloy run softer, as long as the edge geometry is suited to the cutting task.
Hardness is closely related to strength, the ability of the steel to resist rolling or deformation. So any steel alloy run harder will have better wear resistance and greater strength than a softer steel of the same alloy. But the softer steel is likely to be tougher, meaning it's less likely to chip or break.
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