Just sharing my correspondences with Victor HQ in Taiwan
They answered to my questions, and explained the reasoning and understanding of Victor's Response Indicator and its difference with the stiffness rate (as printed in their racquet's cone).
Based on foregoing, I prepared some racquet's charts containing elaboration of Victor's Response Indicator with the Balance Point and Shaft's Stiffness
Hope this help for choosing Victor's racquet that suit your personal style and gameplay