I'm going to give away my betting system for free

After every week I rate every team with one of three ratings:
PLUS: a big win, either winning straight-up as a dog, winning by 14 more than you were supposed to based on the spread, or a last minute/OT win, etc
MINUS: the team on the opposite end of a PLUS
NEUTRAL: the result of the game was pretty much as expected
Yes, the ratings are subjective and not an exact science.
My ratings for Week 9:
NEUTRAL:
DAL 23-13 SEA
ATL 31-7 IND (could be PLUS but everyone kills IND)
HOU 30-12 CLE
SF 19-11 WAS
NO 27-16 TB
GB 45-38 SD
Team on a bye are generally given a neutral but sometimes I will look back at the game they played before the bye.
PLUS/MINUS:
NYJ 27-11 BUF
MIA 31-3 KC
CIN 24-17 (could be neutral but was a big road win)
DEN 38-24 OAK
NYG 24-20 NE
AZ 19-13 STL (neutral based on outcome but OT win)
BAL 23-20 PIT (neutral based on outcome base late TD win against division team)
CHI 30-24 PHI
Next you look at this week's games. You are looking for a matchup between a PLUS and a MINUS. You will bet the MINUS. The logic is the lines can get skewed based on the previous week's performance. I like to call it "reverse logic".
This week you have:
PIT -3 CIN
KC -3 DEN (opened KC -7)
PHI -14 AZ
NE +1.5 NYJ (opened NE -2.5)
Also consider:
DET +3 CHI (Chi coming off big MNF win playing off a short week against a well rested division opponent)
Some weeks, like this one, there are multiple plays. Other weeks there are none. If I find some time at work tonight I may go back and see how the system would have done to date this year.
I haven't made an NFL wager all year but I'm thinking of jumping back in this week, mostly to tune-up for Vegas next weekend.
Good luck.