Planck gives Ω_c h² = 0.120 and Ω_b h² = 0.0224: about 5.4 times more dark matter than baryons. In ΛCDM these abundances come from unrelated mechanisms, baryogenesis for one and particle freeze-out for the other, so they could differ by twenty orders of magnitude. They agree to a factor of five, and the model cannot say why. Meanwhile LUX-ZEPLIN and the LHC have excluded the canonical candidates that were supposed to supply the particle.
The assumption is that dark matter is a separate particle species with its own independent production history. Once the two densities have unconnected origins, an order-one ratio between them is an unexplained coincidence by construction, and the model has nowhere to put the connection the data are pointing at.
SCT replaces the hot-dense-center with a superluminal collision, and replaces the dark matter particle with coherent gravitational amplification of the baryons themselves (P50, P53, P54). In a fully virialized system the amplification reaches a fixed point A* = 1 + N_eff e^-1 = 5.970, derived from Euler's number, the virial theorem, and the cosmic baryon fraction with zero free parameters, and it satisfies the identity A* = 1/f_b with f_b = 0.1675. The apparent dark matter mass is then M_DM_equiv = (A* - 1) x M_vis = 4.970 x M_vis.
From this single change the coincidence dissolves into an identity. The ratio is not two unrelated relics that happen to agree; it is one substance, baryons, read twice: once directly as emitted light and once gravitationally with coherence amplification. The "dark matter density" is the amplified reading minus the direct one, so Ω_dm/Ω_b = A* - 1 is fixed by the geometry of coherence, not by any tuned particle mass. The number five is not put in anywhere; it falls out of e and the virial condition. The identity has been tested: fifteen HIFLUGCS and CLASH clusters give a corrected amplification of 6.006 +/- 0.918, and the product A_obs x f_b across the X-COP sample returns 0.1675 +/- 0.0001, a 0.01σ match to the cosmic baryon fraction.
This is the same coherence mechanism that resolves the S₈ deficit, the lensing-amplitude anomaly, and flat rotation curves, and it is why every dark matter particle search has come back empty: there is no particle to find. There is no need to invoke asymmetric dark matter, mirror QCD sectors, or relaxation fields built to manufacture the ratio.
Three concrete kills. A robust laboratory detection of a dark matter particle ends the superposition account outright. The cluster product test fails if A_obs x f_b varies by more than a factor of two across twenty or more relaxed clusters. And proto-clusters at z > 2 must show A below 5.970, growing toward it as virialization proceeds; any proto-cluster with corrected A above 6.5 breaks the fixed-point derivation.