Comment on "Dynamic properties in a family of competitive growing models"

The article [Phys. Rev. E 73, 031111 (2006)] by Horowitz and Albano reports on simulations of competitive surface-growth models RD+X that combine random deposition (RD) with another deposition X that occurs with probability p . The claim is made that at saturation the surface width w(p) obeys a power-law scaling w(p) proportional, variant1/pdelta, where delta is only either delta=1/2 or delta=1 , which is illustrated by the models where X is ballistic deposition and where X is RD with surface relaxation. Another claim is that in the limit p-->0+, for any lattice size L, the time evolution of w(t) generally obeys the scaling w(p,t) proportional, variant(Lalpha/pdelta)F(p2deltat/Lz), where F is Family-Vicsek universal scaling function. We show that these claims are incorrect.