Comparison of our 9.4% H₀ measurement (red, km s⁻¹ Mpc⁻¹) from the single system RXJ1131−1231 with previous measurements from Chen et al. (2019, blue), Millon et al. (2020b, gray), and Birrer et al. (2020, emerald). The distributions show the H₀ posteriors as described in the figure legend, and the points with error bars mark the mean and 68% credible intervals of the corresponding posterior with matching color. For the same flexible mass models, our analysis on a single system provides a similar precision on H₀ with that from seven lenses with only single-aperture stellar kinematics (emerald, km s⁻¹ Mpc⁻¹). Moreover, the median value of our measurement falls very close to those from previous analyses on the same system but with simple parametric assumption on the mass model breaking the MSD (blue, km s⁻¹ Mpc⁻¹, cf. also km s⁻¹ Mpc⁻¹ from Suyu et al. 2014).