AP Poll and Coaches Poll rankings actually matter when it comes to college basketball. KenPom is probably the most highly regarded of all the various different rating systems out there. I personally pay attention to all of the various rankings systems used by the NCAA tournament selection committee (KenPom, T-Rank, BPI, SOR, KPI, WAB, and NET), but KenPom is likely the most highly regarded of those metrics in assessing team quality.