As has been pointed out, you are limited on the angle a 3-blade head can be sharpened. If I remember my geometry, the sum of the angles of an equilateral triangle(what a 3 blade is) is 180 degrees, or 60 degrees each. The actual double bevel blades would bisect these angles, giving you the potential to sharpen to 30 degrees at best. For those familiar with Lansky & KME sharpening systems, you'll know 30 degrees is a coarse edge option (not very acute). 2 blade heads can be sharpened at 20 degrees or less depending on the size of the ferrule and that edge will feel sharper although will not be as durable due to the "thinner" edge. The WW will work fine, just hope this helps explain the difference in "feel".