Measured velocity dispersion versus halo mass (h(z)·M₂₀₀). Data points are measurements on the CNOC sample. Lensing masses are from Hoekstra et al. (2012) (which are revised in hoekstra et al., in prep.), whereas velocity dispersions are obtained from Borgani et al. (1999) and Girardi & Mezzetti (2001). Although there is a substantial amount of intrinsic scatter (grey region indicates ±1-σ intrinsic scatter around the relation), the best fit to these data (black line) is very close to the Evrard et al. (2008) scaling relation (red).