The O3–O7 derivation chain establishes the structural relation ^{*} = 1/ (+ 1/2) linking the capacity decay exponent to the cascade growth exponent ^{*} governing charged-lepton mass ratios. Papers O12–O14 demonstrated that the exact Weil-block capacity exponent ₄ₗ₀₂ₓ (q) 3. 6, 4. 8 is incompatible with the target window 7. 4, 10. 6, and that this tension is structural rather than a finite-size artefact. The present paper identifies the precise origin of the mismatch: the O6 growth equation dp/dn Rₙ \, c₁₈ p (n) derives ^{*} from a scalar global redundancy functional Rₙ, whereas the exact observable measured in O12–O13 is a block-averaged capacity over (q-1) Weil representations of internal dimension q. We prove a non-equivalence theorem establishing that the block-averaged exponent ₄ₗ₀₂ₓ does not, in general, coincide with the scalar exponent entering the growth equation. We define the effective dynamical redundancy Rₙ^{eff} as the observable that genuinely governs the valence growth in the exact-block setting, and re-derive the growth equation with this observable as input. The re-derivation yields two structural scenarios: (C1) the functional form ^{*} = 1/ (₄₅₅ + 1/2) survives with a corrected exponent ₄₅₅ that differs from ₄ₗ₀₂ₓ by an aggregation bias; (C2) the functional form itself is modified by a representation-dimension correction, ^{*} = 1/ (₄₅₅ + 1/2 + (q) ), where (q) 0 as q. Scenario discrimination requires a block-level redundancy measurement not yet available from the O12 pipeline, identified as the central open direction of this paper.
Jérôme Beau (Sat,) studied this question.