the numbers are mind-boggling at this point during Marvin Lewis's long reign of mediocrity...
I just saw this one: since Andy Dalton started playing for the Bengals (2011 till now), the Steelers are 12-3 vs the Bengals (including the January 2016 debacle), and 12-2 vs the Browns.
Imagine if The OSU was 3-12 vs Michigan!
Put another way, since Andy Dalton entered the NFL, the Steelers are 24-5 vs Ohio teams. That's a success rate that is better than Alabama vs Ole Miss. That's a success rate that's better than The OSU vs Northwestern.
There used to be quite a smorgasbord of bad stats to throw around but Andy Dalton has slowly nibbled away at the choicest items. Those five straight playoff appearances was unprecedented in club history. (Not to mention the 6-of-7 string if we include the end of Carson Palmer's reign.) Then there's the little things like winning in Denver for the first time in 40-some years last season. What pretty much remains is that (1) they're woeful against the Steelers and (2) they can't win a playoff game.
An exception is the stat you told us about regarding road wins against AFC division winners, excluding their own division. Or did I mangle that one? The last time was 1981 at San Diego, and it's so fitting that there isn't even a franchise in San Diego any more.
Marvin Lewis coaching for so long without a postseason win is just another angle on #2. Among head coaches without a playoff win, he has the most losses at seven.
The best stats will likely be those for owners and GM's, but the scribes don't seem to have them handy for us. We'll have to sort it all out ourselves, it seems.