Noiseless quantum fidelity kernels and QVR return scores are exactly Hermitian projector/anchor overlaps, so representation choice is an invariance audit, not a quantum-vs-classical contest.
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Invariance Audits for Quantum Kernels and Variational Rewinding: A Real-to-Hermitian Taxonomy of Projector, Flag, Anchor, and Density Geometry
Noiseless quantum fidelity kernels and QVR return scores are exactly Hermitian projector/anchor overlaps, so representation choice is an invariance audit, not a quantum-vs-classical contest.