Comparison between predicted and true values of the R_ta for models using the stacked images from 3000 bins of R₂₀₀ from: the MDPL2 data (left panel); the merged MDPL2 with Virgo ΛCDM data (middle panel); the merged MDPL2 with Virgo ΛCDM data with removed information inside the R₂₀₀ of the central overdensity (right panel). R₂ scores and the mean absolute errors (MAEs) are shown at the bottom right of each plot. The colors represent the number density of the plotted points, calculated using a Gaussian kernel density estimate. It is apparent that the merging of the two datasets significantly improves the performance of the model even without the central halos’ velocity information.