Left panel: Distribution in the richness-redshift plane of all RedMaPPer detections present in the KiDS effective area. Objects with no AMICO counterpart are displayed in red. Central panel: Distribution of the angular displacement between the centers of the matched detections between the RedMaPPer and AMICO samples for three different redshift intervals. The best-fit Rayleigh distributions are shown as dashed lines; the values of their corresponding σ_r are also reported in the legend. Right panel: Comparison between the RedMaPPer richness, λ_RM, and the AMICO intrinsic richness, λ_*, for the matched objects. Data are color coded according to three different redshift intervals. The dashed line indicates the equality line.