Bully - How many points better a team is vs. below .500 teams than above .500 teams. A team with a high bully factor regularly beats up on lesser teams. However, that doesn't necissarily mean they win games.
If you were -1
vs. teams above 500, and +1
vs. below 500 teams then you would have a Bully score of 2
. Because you're two points better vs below 500 teams when compared to above 500 teams.
ABOVE_500_DIFF - BELOW_500_DIFF = BULLY
or 1 - -1 = 2
Why is OKC at the bottom? - This is good news for OKC. They have positive point differentials against both above and below 500 teams and they beat both of those groups equally as well.