Comparison between the kinetic power Ė_kin (left) and thrust (right) of [O III]λ5007 and C IVλ1549 outflows, for high-z (orange and red symbols) and low-z (blue and green symbols) sources. Both parameters have been estimated by evaluating the outflow radius in each source according Eqs. (9) and (10) for [O III] and C IV, respectively. Black dashed lines indicate the 1:1 relation. The color scheme is the same as in Fig. 4.