Median V_rot/σ profiles for slow rotators (left) and fast rotators (right panels). Top: observations from Atlas3D and ePN.S. For the former we show median profiles and shaded areas bounded by the 20th and the 80th percentiles of the distribution. For the ePN.S galaxies we show individual profiles. Bottom: median profiles and 20%−80% distributions for the TNG50 and TNG100 ETGs, projected along a random LOS. Vertical and horizontal dashed lines are for guiding the eyes in comparing top with bottom panels. This shows that the average V_rot/σ profiles of the simulated ETGs are shallower than the observed profiles.