Overview of halo masses (M_500, c) of XLSSC 122. In red, we show the halo masses derived in this work. Regarding SZ measurements, the red open circle corresponds to the likelihood-weighted average of all masses derived from the empirical formalism (Table 2, lower table). The dot represents the mass estimates from the spherically symmetric model and the diamond that of elliptical ones. For the halo masses reported in the ACT cluster catalog, the star shows the calibrated mass estimate, and the circle the SZ mass obtained by matched filtering the frequency maps. The reported errors correspond to the 16^th − 84^th quantiles. This figure shows the discrepancies between the derived M_500, c indicating that with forming clusters, one cannot reliably use one tracer or constant gas fraction to estimate the true halo mass.