How did they arrive at the chart > Sales figures and follow-up questionnaires after the sale ? Way to much info missing for me to change my steel choices based on retail consumer grade knife purchases for big box store customers. Not putting down guys who can't afford customs, but I thing they (customers) might have very different opinions once they got a taste of a good custom blade that was heat treated correctly, tempered, ground correctly using steels that don't seem to nave great popularity on that consumer grade knife list.