Left: difference in PG_stat of the five models with respect to the model with the lowest PG_stat, for every GRB displayed with increasing SNR (increasing from the left to the right). For each GRB, the five model markers are displayed within two vertical (red and blue) lines. By definition, the model with the lowest PG_stat is always placed on the zero horizontal line. Lower limits at the top of the figure stand for models with a Δ PG_stat larger than 100. Right: distribution of Δ PG_stat for the five models.