Comparison of magnitudes in GALACTICNUCLEUS, 2MASS, and VVV. Panels show the comparison of the same bands in the respective surveys. Gray points show all matched sources, and stars in our catalog present in both surveys are shown color-coded by our modeled amplitude in the K_s band. Solid black lines indicate a 1:1 relation between magnitudes. We see no evidence of biases in the reported magnitudes between the surveys.