Decision: this proof does not create the equivalence of sensitivities; it reveals it. The equivalence between fixed-point methods and KKT exists intrinsically; the proof only formalizes it and makes it observable. For us, the primary question is that of the applicability and robustness of this equivalence in the face of the realities of the Swedish markets and ESG mandates. For example, directives from Finansinspektionen on asset stability could render a theoretical equivalence invalid if its assumptions do not hold in extreme market conditions. We must prioritize the real impact and not dwell on a semantics of creation.