The edge makes a huge difference. I wouldn't spend so much time getting my choppers sharp it didn't matter. When I do comparisons I try to have equal edges on the knives as far as is possible so I am evaluating the knife and not the edge. The convex edges seem to do best in chopping. The BRKT Golok chops great and only weighs 17 oz. That full convex edge bites deep but doesn't stick in the wood like some other profiles. That is why I put nice convex edges on all my choppers.