I think Auburn in 2017 was a case of the better team NOT playing to their ability while the lesser team was playing well above theirs. Don't get me wrong, I can't just dismiss Auburn as some sort of cosmetic fluke. They DID beat both Alabama AND Georgia reasonably easily, so let's not write it totally off as luck. And pro-Crimson shanalysts would tell us all that "Auburn should have beaten LSU, they fall apart only in the final three minutes, it was on the road" - if it had been Alabama.
Auburn killed MSU, we needed a comeback.
We sandblasted Ole Miss, they routed them but not by nearly as much.
They collapsed against LSU, we beat LSU but didn't really look all that good doing it.
We mauled Mercer, they scraped by Mercer.
We both beat Arky by 32 points.
They blasted aTm, we struggled but won.
While common opponents is usually not a good argument (too many variables), if there's a consistent theme (say one team blows out the same team another barely beats) it can point in one direction. No such thing here.
But no "voodoo" happened in 2017 at Auburn. We can whine that "Saban should have gone to Tua" all we want, but Tua ain't the one who gave up the 408 yards to Auburn's offense, either. (And anyone wanting to go "but injuries" better be willing to give Auburn the same doubt for their UGA rematch). For whatever reason, we got outplayed.
As far as 2019, I'd remind everyone we put up 45 points with a backup QB in his first SEC start. That came down to bad officiating and a Pick Six that just defied all logic.
The only time I can say FOR SURE that a lesser Auburn team beat Alabama was in 2013. The first four Auburn was indisputably better and the last two are debatable. I don't think they were better than us in 2017, but they did outplay us on game day.
What this whole "8-win" argument is trying to come out and say - without really saying - is "Alabama can't beat Auburn on the road when both teams are good." The very objection has its roots in the Little Brother mentality.
And I reiterate: if the 8-win argument counts, so does "entered the game with 7 wins and failed to win the 8th game."