Well, the big boys (NBA) use this:
In the event two or more teams are tied in the standings, a series of tiebreakers are applied to determine which team receives the higher seeding.
Two-Team Tiebreaker1. Better record in head-to-head games
2. Higher winning percentage in conference games
3. Higher winning percentage within division (if teams are in the same division)
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
Three-Team Tiebreaker1. Best head-to-head winning percentage among all teams tied
2. Highest winning percentage in conference games
3. Highest winning percentage within division (if teams are in the same division)
4. Highest winning percentage against playoff teams in own conference
5. Highest point differential between points scored and points allowed
I'm just not sure if thet point differential is only from the head-to-head games or all games of the season.
And I know that FBB is sometimes different from the NBA, so no guarantees here ...