Both the ΔE(oxo) and ΔE(HAT) of LS Fe(III) codoped SACs are less favorable than those of LS Fe(II), whereas the ΔE(oxo) and ΔE(HAT) energetics of IS Fe(II) and IS Fe(III) codoped SACs are similar. This observation is consistent with our prior study suggesting the benefit of having a stronger Fe(III) oxidant is outweighed by more favorable ΔE(oxo) for Fe(II) without much penalty on ΔE(HAT) energetics relative to Fe(III). Our study here expands on that earlier observation to suggest that the benefit for HAT is indeed minimal for Fe(III) SACs.