Strength of schedule is why the Patriots are at #2 over the other 3-12 teams.
Their strength of schedule is .461 currently - including all 17 opponents (Jets, Bills, Dolphins X2)
They are behind only:
Miami .418
Washington .436
Philly .455
Indy .457
(Buffalo also .461)
Note that all the AFC East teams are under .500 in strength of schedule.
Chargers need a win to clinch a wild card slot - they will be motivated to win Saturday.
The Bills have clinched the division, but cannot catch KC. So they will likely rest a lot of players in the finale. New England played them tough in the first half - they maybe have a chance.
The New England SOS will "improve" (opponents win rate will increase, dropping them in order) if their final two opponents win those games against them. The next team below them in SOS is Jacksonville at .479. There are still two games left for the Pats opponents - so still some movement potentially. If all the Pats opponents win and all the Jax opponents lose, that might tilt the SOS comparison - you'd have to model that out. But Jacksonville closes with Tennessee and Indy, so they could also potentially win a game. Lawrence is out, so we are all rooting for Mac Jones these final two weeks!
If New England loses out, and the opponents of New England and Jacksonville play about as they have through the season - if there is not a significant shift in SOS - then New England scores the #2 slot.
If New England loses out and Jacksonville beats Tennessee or Indy, that should solidify the #2, regardless of improvement in SOS. The Tennessee SOS is .510, so unlikely to change enough that Pats would drop below them after 15 games.
Because Jax and Tenn play each other this Sunday, one of them gets either a fourth win - or they both tie. Either way, there's one fewer three-win team (or two with a tie). Since Tennessee has a .510 SOS, better for the Pats if Jax wins that game.
If New England wins a game, and Jax-Cleveland-Las Vegas all lose out, Pats would drop to #6. (Would be #7 except both Jax and Tenn cannot lose out). If they win two games, could drop to #10.
Still a lot of moving parts.