The most straightforward (and often incorrect) way to analyze an O/U is to look at the regular season averages. Pitt's PPG allowed is 13.9, AZ's PPG allowed is 26.6, so hitting the averages yields 40.5 points. Pitt's PPG scored is 21.7, and AZ's is 26.7, which if they hit their averages yields 48.4 points. Jack up a few points for good weather and erratic/desperate play from the team that gets behind, and I was all ready to bet the over 46.5. Then I looked at the Steelers' scores and found that every one of their games played during the regular season was under 46.5 except for a 38-17 win at home in week 1 v. Houston, a 26-21 win @ Jac in week 5, and a 38-10 win @ Cincy in week 7. Other things to consider:- When Pitt has played teams with big, athletic WRs like Fitz, they've still been able to keep the points in check. Houston and AJ put up only 17, Cincy with Housh and CJ put up only 10 in both meetings, NYG with Plax put up 21, Indy put up 24, SD with Jackson, Chambers, and Gates put up 10, Dallas with TO and Roy put up 13, SD in the playoffs put up 24. I know several of these games were affected by Pittsburgh weather, but Pitt doesn't seem to have too much trouble with big WRs. - AZ is tougher to analyze because they're playing so much better now than they did in the regular season, especially their D. But, if we restrict their schedule to Weeks 1-14 (just assume that they tanked after they clinched the West) and the playoffs, we can see that in those 16 games, the under hits 6 times and the over hits 10 times. The six opponents where the under hits are: SF, Mia, Wash, Sea, StL, and Car. The 10 opponents where the over hits are: NYJ, Buf, Dal, Car, StL, SF, NYG, Phi, Atl, Phi. The average PPG scored by the six under opponents is 19.7 ppg. The average PPG scored by the 10 over opponents is 23.4. Pittsburgh averages 21.7 ppg, so they're right in the middle of this stat. However, if you must make comparisons, I see the Pitt offense more aligned with the likes of Miami, Washington, Carolina, and on a good day, the NY Giants. I don't think the statistics in this subpart add a whole lof of value to the analysis, but they're something to be aware of.- I thought there may be a correlation to the over hitting in the Cards' games and poor pass D of their opponents. However, no real correlation can be drawn. The rank against the pass of the Cards' 10 opponents where the over hits are: 3, 3, 5, 8, 13, 16, 19, 20, 21, 29. Pitt has the #1 D against the pass, so I believe this stat shows that at least the Cards are capable of clearing the over when playing top ranked pass Ds. - One last thing that I noticed was that in the Cards' games that I analyzed where the over hits, the margin of victory by either team is 13, with a chronological breakdown of 21, 24, 6, 4, 21, 5, 8, 28, 6, and 7. Since Week 6 (which excludes the initial 21 and 24 point margins of victory), these margins of victory are relatively close. What does this mean? I think this means that when the Cards' hit the over, their O scores lots of points, and their D also gives up lots of points. Contrast this to the Pitt games that cleared the over, which include a 38-17 win in week 1 v. Houston, a 26-21 win @ Jac, a 38-10 win @ Cincy, and the 35-24 win v. SD in the playoffs. In the all of these games the Pitt D played better than their points allowed indicates. What does this mean? When Pitt hits the over, it's probably because their O is getting them there, or some flukey things happen to allow the other team to tack on some points. I think that looking at the nature of the games by both teams that hit the overs indicate that it is "hard" for an AZ game to hit the over, because BOTH the AZ O has to play well and the AZ D has to play bad, and it's a little "easier" for Pitt to hit their overs, because the D playing well is almost a given, and only their O has to light it up. Honestly, when I started doing this research I thought I'd find something a little more conclusive than what I've posted. I think the whole body of evidence should make the under a slight plus EV bet, but I'd be far from confident.