  In the paper [Phys.Rev.E Vol.79, 051605 (2009)] by Chou and Pleimling a claim
is made that a parameter-free scaling that gives data collapse for some
simulation models would replace universal Family-Vicsek (FV) scaling. Here, by
giving the explicit form of this scaling for competitive growth models, it is
shown that data collapse in this procedure is obtained by a shift-and-scale
operator that gives no information about stochastic dynamics and has no
relation with FV function.
