Comparison of the Hα+[N II] flux measurements of the simulated spectra between QSFIT and OU-SPE. The results for the type 1 and type 2 AGN are shown in the left and right panels, respectively. Sources with a spectroscopic redshift measured from the simulated spectra and flagged as good (see Sect. 5 for details) are marked with blue symbols. The bottom panel shows the percentage flux difference defined as ΔF/F = (F_Hα, QSFIT − F_{Hα, OU − SPE})/F_{Hα, OU − SPE}. The one-to-one flux relation is shown with a red dashed line, which is set to zero in the bottom panel. The dot-dashed blue line in the bottom panel represents the 50th percentile of the ΔF/F distribution.