What is every AFC West Division team's record against the over/under line as an underdog in the 2012 season?

Definitions
Team Over Record Over % Under % Total +/-
LA Chargers 5-2-0 71.4% 28.6% +2.4
Denver 2-1-0 66.7% 33.3% +4.0
Kansas City 6-8-1 42.9% 57.1% -3.1
Las Vegas 4-7-0 36.4% 63.6% 0.0