Object-by-object comparison of SEXTRACTOR quantities. Upper panels: unweighted histograms for measurements from the KiDS COSMOS field and our simulated data. Lower panels: 2D histograms with the difference between the simulations and the data along the vertical axis and the quantity of interest along the horizontal axis. Each vertical column is normalised such that each peak in the 1-dimensional slices of the 2D histogram is normalised to unity. This improves the histogram visually, allowing us to see the contrast across the full parameter range. The shaded region in the bottom figure indicates where the corresponding quantities in the simulations are negative. The red dashed lines show the median values, which indicate that the agreement between the simulations and the data is generally good.