after 4 weeks starting comparing 3rd down eff ratings, if a team ranked 20 or more positions, i.e. team A was 3rd and team B was 24th thats diff of 21.
week 5 3-0
week 6 1-1-1
week 7 1-0
week 8 4-0
total 9-1-1
# of plays vary of course, only 4 weeks but nice results. will see how it goes