  It is conjectured that the size scaling of the nearest level spacing in the
critical spectral region, $S(N)\propto N^{-\lambda}$, remains qualitatively the
same within phases of extended and critical states. The exponent $\lambda$ is
therefore identical to that for the bare level spacing (at zero disorder). Our
calculation of the scaling for the one-dimensional model with diagonal disorder
and long-range power-like interaction confirms the conjecture.
