Deviations from average significance levels for the best-detected galaxy clusters of the VACA LoCA pilot sample. The points correspond to the mass estimates obtained by assuming different versions of the gNFW pressure profile. The variations in σ_eff are always less than 3 (see Sect. 4), which, according to the Jeffreys model selection criterion, implies that no pressure model is strongly favored over the others for any of the VACA LoCA clusters. The large uncertainties on the masses derived assuming the profile by McDonald et al. (2014) are due to the large uncertainties on the respective best-fit gNFW parameters.