The problem with assuming that there's no referee bias because referees don't go into games intending to favor Team A over Team B is that it assumes intentionality is necessary for biased calls. It isn't. ........................... no-call on an obvious PF.
here is the thing... there is no excuse within a conference, but there is a ton of room for excuse crossing conferences, imHo.
the PAC, with their 'west coast O' some years back were the recipient of BOTH a lot of missed PI calls and over scrutinized PI calls that were made... they let the interior hold like mugs unless the player was set to sack.... then, they'd call it. all that is well and good and it's adjusted for inside that conference. the B1G would have a lot of holding calls in the same era, a lot of false starts, but very few 'false starts because the Olineman was 'tricked'' as we seen called nowadays... the receivers would be in the flats or five yards downfield beating the hell out of the CB's, or, vice versa.. nobody cared, as that wasn't where the action was. SEC and it's playaction had it's drawbacks... and advantages... and nobody cared. it's how the game was played.
now, though, when the focus is all season long on national champions and conference doesn't hold the same weight anymore- and games which require refs from neutral conferences to officiate- you'll see what we'd call 'asinine' calls, or questionable call, or missed calls- because that isn't the way it's called in your 'home' conference.
... i've not studied other conferences this season- just the SEC... and there is zero doubt in my mind that refs aren't entering a game with a hedge on one team or another... and that has big psych impact on players. the UT players after the UGA game were blunt about it... we can see it plainly without their confirmation. and it all comes back to: it's a business and it's about the money, period. SCOTUS has even ruled that these leagues are such and can therefor do what they want to impact the outcome without penalty... folks forgot that, apparently... but it's so... and begs (at least presents) the question: why even concern over a decision such as that if it weren't happening?
and is why i won't wager on games.
especially meaningful games.