FP for our data compared with those of Lu et al. (2020). Left panel: FP coefficients obtained at z = 0 for the WINGS and Illustris data fitted in the same mass interval chosen by Lu et al. (2020). The black dots mark the WINGS data, the red ones the Illutris-1 and the blue ones the IllustrisTNG-100 data. The FP coefficients obtained by Lu et al. (2020) are listed at the bottom of the panel and the dashed line visualizes the relation. Right panel: same as in the left panel but for the data and relationsips at z = 1. The dashed line is the FP of Lu et al. (2020) FP whose coefficients are also displayed in the panel for the sake of clarity.