Difference between R_κ calculated for three different pairs of profiles: In blue, an NIS and an SPT-transformed model with f₂ = 0.11 and γ_p = 0.1; in magenta, a composite Hernquist+gNFW model and a power-law model (M1); in red, Hernquist+gNFW model and a cored power-law model (M2). The shape of ΔR_κ for the models presented in SS13 and SS14 are qualitatively similar to that observed for the fiducial SPT model presented in Sect. 4.