cosjobs
Footballguy
I think they must be analyzing H/A for all NFL games. That would explain it, but the title of the article seems to undermine it.All of them were different for "home/away" vs "away/home". Which seems odd for a game that has always been at a neutral site with only a nominal "home team".
Skimming the article a bit more, I think maybe they're analyzing historical game results; not sure if they just looked at SB games or more general.
tbh, I'm unsure whether articles about superbowl squares go through their typical vetting and editing.