Total mass of a supercluster probed by the total mass of member clusters. The sum of the member cluster masses (CM) is plotted as a function of the true supercluster mass, i.e. the total halo masses (HM) with the correction factor applied (see text for details). The superclusters in the CS catalogue are shown in the upper panel, those in the GCS in the lower one. We show a power-law fit as a solid line with 2σ scatter of data points as dashed lines.