We showed that the ωB97X-MP2-D3(BJ) double hybrid fitted to data calculated using ωB97X orbitals produces a greater overall error for the test set data than the initial version of WM21-D3(BJ) calculated in the same way. In addition, by using the self-consistent optimization procedure, the final WM21-D3(BJ) functional results in even lower errors for this set; demonstrating the advantage of the fully self-consistent UW12 approximation.