Comparison between Chandra and XMM-Newton in terms of hydrostatic masses in logspace (left) and realspace (right). Gray circles: Hydrostatic masses for Chandra (derived from data) and XMM-Newton (from rescaled Chandra temperature profiles). A best-fit relation (derived in logspace) is shown in black (Eq. (5)), along with the results from Israel et al. (2014b; red dashed line) and Mahdavi et al. (2013; green dotted dashed line).