The Dabullz.com rating, which is the number you see next to the team in the power rankings is based on a statistical formula that takes into account offense, defense, win percentage, and the team’s recent playoff performance.
The formula used to calculate the Dabullz.com rating is:
35 * (O-Rtg / League Best ORtg) + 35 * ([League Best DRtg - (DRtg - League Best DRtg)] / League Best Drtg) + 20 * (Win% / League Best Win%) + 10 * (Road Win% / League Best Road Win%)
The objective of this power ranking system is to accurately predict the winner of the NBA Championship at the end of he season. The daily rankings are merely just to show the horse race aspect of the NBA season.