Two-Team Tie-breaker
1. Better record in head-to-head games
2. Higher winning percentage within division (if teams are in the same division)
3. Higher winning percentage in conference games
4. Higher winning percentage against playoff teams in own conference
5. Higher winning percentage against playoff teams in opposite conference
6. Higher point differential between points scored and points allowed
http://www.nba.com/spurs/tickets/playoff_info_2005.html