  The internal-shocks scenario in relativistic jets has been used to explain
the variability of blazars' outflow emission. Recent simulations have shown
that the magnetic field alters the dynamics of these shocks producing a whole
zoo of spectral energy density patterns. However, the role played by
magnetization in such high-energy emission is still not entirely understood.
With the aid of \emph{Fermi}'s second LAT AGN catalog, a comparison with
observations in the $\gamma$-ray band was performed, in order to identify the
effects of the magnetic field.
