Observed and simulated cool-core fractions. The gold bars correspond to the simulation, for which the temperature was obtained with emissivity weights in the XMM-eFEDS band. The grey bars for the low-mid mass range correspond to the eROSITA field equatorial deep survey eFEDS data from Bahar et al. (2022) and Chiu et al. (2022). (^*Also contains 1 mid-mass cluster from the Lovisari et al. 2020 sample). The black bars for the high mass range correspond to the Planck SZ-selected sample observed with XMM-Newton from Lovisari et al. (2020). (^**Also contains 10 high mass clusters from the Bahar et al. 2022 sample). The vertical dashed line corresponds to M_500c = 0.7 ⋅ 10¹³ M_⊙, above which the eFEDS survey is expected to be complete for redshifts below z < 0.3 (Comparat et al. 2020).