Returning to Ferrari and Robertson suggestion about the use of BWF line shapes for asymmetrical bands (or splitq-Gaussians), are they always suitable or is it better to use several Lorentzian (or q-Gaussian) line shapes? It depends on interpretation. However, let us also add an observation from Ferrari and Robertson, 2000, an article that discussed the "interpretation of Raman spectra of disordered and amorphous carbon". The observation is concerning the BWF line shape. An "important issue" from the equation describing the Fano modified Lorentzian line shape, is "that the maximum of the BWF line [ωmax] is not at" its center ωo but lies at lower frequencies or higher frequencies, depending on the sign of the Fano parameter. Ferrari and Robertson defined the G carbon band "position as ωmax rather than ωo. … attribute no physical meaning to the undamped frequency but merely view the BWF line as an efficient way to fit the data. The asymmetric BWF line shape is appropriate for the G peak due to the asymmetry of the VDOS of graphite or amorphous carbons towards lower wave numbers. No Fano resonance is present" . In reporting the data, Ferrari and Robertson use ωmax, which "compares directly with data from symmetric curve fitting".