The number of NS ULXs for models A and B (left and right panels, respectively) per stellar mass in the burst populations. With green filled circles, we show the number of NS ULXs with observable pulses using the NS radius (R_NS) as the accretion radius. With pink circles we show the number of NS ULXs with observable pulses using the magnetospheric radius (R_M), and the mustard circles show the total number of NS ULXs.