Nonthermal pressure fraction (P_nt/P_tot) from our fit to Abell 1689, along with the corresponding 68% credible region (shaded purple), calculated from the accepted MCMC samples as outlined in Section 3. For comparison, the P_nt/P_tot result obtained for the same cluster by Chappuis et al. (2025) is shown in blue, also plotted with the corresponding 68% credible region. The results in yellow and green show the ensemble-average P_nt/P_tot result from independent analyses of simulated clusters from The300 (Sayers et al. 2021) and Omega500 (Nelson et al. 2014) simulations. The shaded hashed regions for these correspond to the 68% intrinsic cluster-to-cluster scatter within those simulations. Shaded gray denotes regions where the mass distribution may not be fully constrained from the observed WL shear signal (see Section 5.2).