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Don' t you lose 50% of your cutting ability with a two blade over a three blade
Either I' m missing something important here or my math teachers told me a bunch of big fat lies. A 2 blade vs. 3 blade is a 2:3 ration. A 2:3 ratio equates to 2/3. 2/3 equates to 66.666666%
The way I see it on the two-blade vs. three-blade issue is that there are advantages and disadvantages to both. Two-blades are the most easily sharpened/resharpened in my opinion. Two blades reduce the likelhood of jamming in bone. Two blades require less KE to get the same penetration. Two blades kill very effectively.
Three blades give you an additional blade and, therefore, an additional opportunity to hit a major artery/blood vessel as it passes through. Three-blades make a larger entry wound and often provide a better blood trail. Three-blades CAN be designed to be stronger than two-blades and CAN be designed to reduce the possibility of planing. However, that' s not to say that any given three-blade is designed to improve on either - it' s just potential for the design - and some DO take advantage of that potential.
The head that flies best; is sharpest and works best with the level of KE your setup provides is the best - 2 blade, 3 blade, 4 blade... whatever.