Pac-10 power rankings

One of my Pac-10 analysts created his own power ranking system that is a takeoff on USC coach Tim Floyd's own system. Here's how it works: 0 points for a home win (because a team is suppose to win at home), -2 for a home loss (because it should hurt twice as much to lose at home), +2 for a road win, 0 points for a road loss, +1 for a win on a neutral site and -1 for a neutral site loss.
Here's how the top of the conference looks on that system:
UCLA at +17
Stanford: +14
Washington State: +13
USC: +6
Arizona: -1
Arizona State: -1
Cal: -6
Washington: -6