Not really, superdeterminism postulates that the measurement outcomes are guaranteed. Here, you could imagine the universe as being operated on by some giant H

Not really, superdeterminism postulates that the measurement outcomes are guaranteed. Here, you could imagine the universe as being operated on by some giant Hamiltonian operator with a basis of eigenstates, and then the amplitudes will just deterministically evolve according to the Schrödinger equation. But the amplitudes only reveal information about probabilities of measurement, not measurement outcomes themselves. [How such a measurement could occur (coming from outside this universe system) isn't physically clear to me but isn't relevant either.]