OK...so in your scenario, say we lose. Now we have 2 losses in conference...even at a three way tie we don't have that strong of an argument for being the conference champion.
If you can't beat Clemson from the other side, why do you deserve to be conference champions? There are two scenarios: 1) Clemson is the best team from the other side and you lost...you don't get the chance to play them again in the ACCCG...there's a pretty strong case that you don't deserve to because you already lost and the other teams in your division have a stronger conference record. 2) Clemson is not the best team on the other side...and you lost. In this case, the handicap argument doesn't even add up, because they aren't the best team over there.
It's pretty simple in my eyes, btw. If you lose one conference game, you are going to be in the ACCCG most years, period. If you lose two conference games, the conference record is easily a fair tiebreaker. When you start getting into tiebreakers with two losses beyond the heads up matchup then no one really has that strong of an argument anyways, so it is what it is. If you've got three conference losses (one crossover) and you're trying to argue that you deserve to be in the championship game over a team with two division losses that you beat then you're just stretching it...with three conference losses you are clearly not the best team in the conference, so at that point you just need to take a drink and enjoy your bowl game.