Tsallis q-Gaussians can be easily compared with Gaussian and Lorentzian functions, and with pseudo-Voigtian functions too. For q-parameter equal to 2, the q-Gaussian is the Lorentzian function, and for q close to 1 the Gaussian function. In the deconvolution of L-Cys, Cys and Hcy data, we have found that the q-parameters are giving functions which have more Gaussian than Lorentzian character. Then, the pure Lorentzian functions used for SERS by Camerlingo et al., 2022, are not suitable for L-Cysteine, Cysteamine and Homocysteine data. Further studies are necessary, to understand the character of SERS line-shapes.