Overplotted in the Hubble diagram of the SN Ia sample used by Davis et al. (2007), are the theoretical curves of the distance modulus in the collisional-DM model, i.e., Eq. (55), for several values of the combination wΩ_M. Almost the entire dataset lies within the stripe formed by the curves μ(z), corresponding to wΩ_M = 0.10 (red solid line) and wΩ_M = 0.19 (blue solid line), while, the best fit to this sample is achieved for wΩ_M = 0.16 (green line). Once again, the dashed line represents the (incorrectly used) theoretical curve  with being given by Eq. (73).