Ultimately I feel we need to stop emphasizing one single point above all others and examine knives and other cutting tools on a case-by-case holistic basis, taking all factors of design, specification, execution, and task-appropriateness into consideration as a total packaged system. If there's truly a single aspect to narrow our collective focus on it's context. A chef's knife is awful at felling trees. An axe is awful at slicing carrots. But, providing they aren't horribly flawed in some way, they're ideally suited to the tasks for which they were actually intended. Often when assessing a design, before I even look it over closely, I look at what the manufacturer has to say about what they made it for. Then I look at the tool and see if the features I see actually appear to be optimized for the purpose described. Then I look at the features again, ignoring what the manufacturer says it's intended for, and let the features tell me how the tool actually "wants" to be used to see if that describes other optimum applications.