Both power rankings which I calculate are based on a C-Ave which is a combination of the win/loss record, strength of opposition and statistical rankings in the major categories. These variables are objectively determined, but are weighted subjectively (my own cockeyed opinion that things like offensive numbers mean more than defensive data), so take them with a grain of salt. The W/L/P Value rankings, again based on a C-Ave, takes into account the opposing team value in each win/loss.