Comparison of the B/T_r,sim values of the simulated galaxies against the Sérsic indices, n_ss, derived from single-Sérsic fits, for galaxies with m_r < 18.5, using multi-band fits. Red and black points represent galaxies with n_B,sim > 3.5 and n_B,sim < 3.5, respectively. The vertical green line indicates n_ss = 2, which is often used in the literature to separate disk- from bulge-dominated galaxies. Only a weak correlation between the single-Sérsic value, n_ss, and the B/T flux ratio is visible, with very wide scatter.