We ran SLUG on the stellar associations in the matched catalogue. For the comparison we define a robust subsample, where either CIGALE or SLUG predict an age younger than 8 Myr and a mass above 10⁴ M_⊙ (859 objects). The masses show a wide scatter in both directions, but SLUG generally predicts older ages. As a result, the ionising photon flux is systematically lower than the one from CIGALE.