Is there any paper or piece of code showing, on a REAL quantum computer, that a specific real world problem (possibly related to computer science, machine learning or finance and possibly NOT related to cryptography) is solved more efficiently than a classical computer ? In general, I'd be happy with any problem where a Quantum Computer can bring value, which does not need to be necessarily speedup. In fact, for me it's enough if the quantum version is better under any point of view (stability, robustness, energy consumption, model expressiveness ...) as long as this superiority is somehow showed and documented true actual comparisons and experiments.
All the resources I looked at never make any comparison with the classical version and often claim quantum computing is powerful just showing it can solve a specific problem, without telling much about the classical counterpart.