They do this quadrant stuff to de-emphasize the RPI, which everyone knows is flawed. The quadrants are defined based on RPI, though, so it's just a cosmetic difference.
Just grab some kenpom, sagarin etc, and be done with it.
Of course, our RPI is elevated this season, so don't change until next year. In a sense, we gamed the RPI system this year. Kenpom has us at #61.