In Sec. II, we present the cDFT method and the key developments to generalize this method. We then present the GCMC calculations that are used as a benchmark in our study and how the cDFT setup is designed to match GCMC results (Sec. III). In Sec. IV, we compare the cDFT predictions to the GCMC benchmark for a set of adsorption isotherms, enthalpy of adsorption curves, and their computational cost. In Sec. V, we explore the underlying reasons for cDFT deviations from GCMC results. We finally conclude in Sec. VI on the potential of cDFT in the context of materials screening for physical adsorption-based processes.