Wouldn't the scaling of time be a more reliable tell of quantum computing? If humans can marginally solve problems with a slower increase over time than convent

Wouldn't the scaling of time be a more reliable tell of quantum computing? If humans can marginally solve problems with a slower increase over time than conventional algorithms that would hint at a quantum algorithm being in use. It certainly wouldn't be faster compared to clocked silicon, and there would probably be a lot of noise and overhead involved.