NFL futures betting allows speculators to take a position on the two teams that will make the Super Bowl. The favorite right now is a Chiefs-Lions matchup, with those two teams in the driver's seat for the No. 1 seed in their respective conferences. The second favorite is Bills-Lions, a matchup that's on the books for Week 15 to serve as a potential Super Bowl preview.

Even though the Bills lost last week, I still have them tied at the top of my spread power ratings. The defense was a letdown for sure, but when Matthew Stafford is as on point as he was Sunday, it's nearly impossible for anyone to stop him, not to mention Puka Nacua making some incredibly tough receptions at key parts of the game. The positive for Buffalo is that the offense stepped up to the challenge, averaging 8.2 yards per play despite Josh Allen, who was responsible for six touchdowns, not having two of his top weapons in the passing game. As long as the Bills have Allen, they can beat anyone on any given day.

That includes the Lions, a team that has won 11 straight since a Week 2 loss to the Bucs where Jared Goff had one of his worst games of the season. Since their Week 5 bye, the Lions have scored at least 23 points in every game while giving up more than 23 only twice, but one of those instances was last week against a Packers offense that didn't really seem to play that well despite the 34-31 final score. A test against the Bills offense is perfect to determine whether the litany of defensive injuries may have finally caught up to Detroit. I have them rated a point behind Buffalo because I have more concerns about Detroit's defense despite what we saw from the Bills against the Rams.

What are NFL spread power ratings? You can check out the explainer in how to build and maintain NFL power ratings in our Week 1 version of this column. Or, you can read on to see my ratings for every team and where I think the market is off this week. I went 636-534-34 (+4899) on ATS picks from 2017-23 and even better with my top five picks each week, going 428-327-25 (56.7%) from 2015-23 in the big Las Vegas spread picks contests. My power ratings have been a big part of maintaining that success. 

Which teams are being underrated by the betting market? And which spreads are the furthest off where they should be? ... Join SportsLine right now to see Week 15 NFL power ratings from the expert who's 636-534-34 on ATS picks from 2017-23, returning $4,899 to $100 players!