Comparison of different properties of the DS+ no-overlapping substructures with the corresponding ones of the real groups matched to the detected substructures. Top left: mean l.o.s. velocities. Top right: l.o.s. velocity dispersions. Bottom left: projected group size (mean harmonic radius). Bottom right: total stellar mass. In each panel, we include the mean and standard deviation of the differences between the substructure and the matched real group properties. The lower sub-panels show the logarithm of the ratio of the substructure and group properties, and the dotted red lines indicate 50% variations with respect to the ratio of unity.