Stacked probability density plots of N_H, Γ, and L_X obtained with the different fitting approaches. Left column: Bayesian method. Middle: ML method. Right: M1 model. The true values are binned to 30 bins. The red line shows the medians of the distribution in each bin, and the dashed orange lines are the 16% and 84% percentiles. The dashed green line shows the reference where the fitted value equals the true one.