Comparison of matched RR Lyrae stars in mean intensity magnitude space (top panel) and period-amplitude plane (bottom panel). The gray dots in both panels represent the total cross-matched sample (between our aperture VVV data and sample provided in Molnar et al. 2022), and red points stand for stars where the absolute difference between both mean intensity magnitudes exceeded 0.3 mag. To assess both photometric sources, we listed the mean and standard deviation between both samples (with discrepant RR Lyrae stars removed). The blue line in the top panel represents the identity line.