In addition to the Robeson boundary, we also observe other well-known experimental trends, such as the correlation between gas permeability and fractional free volume. Furthermore, our results indicate that increasing sorption selectivity enhances overall permselectivity. These experimentally well-established trends are challenging to capture within a simulation framework, yet our work successfully reproduces them, underscoring the accuracy and robustness of the DCVMD simulation method. This approach not only validates the simulation framework but also provides critical insights into the molecular-level separation mechanisms across a diverse range of porous membranes.