Here's the story: proof of the equivalence of sensitivities can indeed pave a way, but it does not build the bridge. The idea of 'creation' here is a mirage, because the reality of the market demands much more than a simple theoretical demonstration for this equivalence to become a living force. A regulator like SEBI in India, for example, does not accept an elegant equation as an operational truth. Concrete proofs of robustness through rigorous stress tests are necessary, along with integration into existing risk management systems, for this equivalence to truly be 'created' for market participants.