Similar to Fig. 15, but using the cosmology sample of eRASS1 clusters as a test sample, and the SPTpol-100d catalogue as a reference sample (65 objects at z > 0.25, coloured dots). The vertical axis represents the column xi in the SPTpol catalogue, standing for the measured cluster signal-to-noise (unitless). The horizontal axis represents the measured redshift in the SPT catalogue. The model predicts only a handful of eRASS1 detections among those objects, consistently with the observed number of 8 matches.