  The production of different particle species is recently measured in $Pb-Pb$
collisions by the ALICE experiment at $\sqrt{s}=7 $TeV. This motivates the use
of various bosons and baryons measured at lower center-of-mass energies in
comparing their ratios to the hadron resonance (HRG) gas model and PYTHIA event
generator. It is found that the particle-to-antiparticle ratios are perfectly
reproduce by means of HRG and PYTHIA at RHIC and LHC energies. The kaon-to-pion
and proton-to-pion ratios are entirely overestimated by the HRG model. The
PYTHIA event generator obviously underestimates the kaon-to-pion ratio and
simultaneously reproduces the proton-to-pion ratio, almost perfectly,
especially at LHC energy. While matter-to-antimatter and non-strange abundances
are partly in line with predictions from the HRG model, it is found in the
ALICE experiment that the measured baryon ratios are suppressed by a factor of
$\sim1.5$. The strange abundances are overestimated in the HRG model.
