Gas velocity as a function of kinetic jet power, P_jet, for our galaxies (red dots) and in the model of Wagner et al. (2012) for different Eddington ratios (dashed lines). The black star marks NVSS J201943−364542, where we have a direct estimate of the Eddington ratio. The light orange hatched area marks the velocity range in the sample of Buitrago et al. (2014), which has no signatures of powerful AGNs. This suggests that for jets less powerful than ours, kinematic signatures will be very difficult to disentangle from other kinematic processes at high redshift.