Comparison of velocity measurements. Left: Comparison of GC velocities from this work based on the MUSE data and from the FLAMES spectra presented in Paper I. Middle: Comparison between this work and GC velocities from the same data as presented in Emsellem et al. (2019). Right: Comparison to GC velocities reported in van Dokkum et al. (2018a,b) from Keck DEIMOS and LRIS spectra. The dashed line shows the one-to-one relation, while the dotted line in the rightmost panel refers to a velocity offset of 12 km s⁻¹ (see also Emsellem et al. 2019).