Hey All,
Just wanted to point out that the Anniversary SHBM "sweet spot" or rather the section that has the most blunt contact force is closer to the handle than the NMFBM. Now from my limited knowledge of physics this means that less human force is necessary to create the same impact force on a NMFBM. The concept is called "Conservation of Angular Momentum". I'll leave a link to explain this below. In real life application that means the Anniversary SHBM would be superior to the NMFBM is areas where less space is available thereby rendering a smaller range of swing motion. However, since the SHBM is thicker and heavier than the NMFBM it should about the same if not more capable to produce impact force closer to the tip.
Ergonomics of the NMFBM make the knife feel more blade heavy. So although I am biased in favor of the SHBM -- I think overall physics and the handle style make it a slightly superior chopper. Anyone more educated than I am is more than welcome to point out anything I got wrong. Either way here is the link
http://en.m.wikipedia.org/wiki/Angular_momentum