I think whichever OL performs best (pass pro and opening holes for RBs) will be the largest determinant of the game's outcome, but one could directly correlate that to QB play. I don't have a problem with saying their OL has, on paper, an edge over ours until we actually have enough live footage to tell us otherwise, but I believe they have a tougher DL to face. On the flip side, our OL will have to contend with crowd noise unless we can take the crowd out of it early, so they have to be super disciplined and focused.
Likewise, avoiding turnovers and keeping penalties to a minimum.
I'll also add, that while I love blocked punts, roughing the kicker penalties make me livid and I sometimes wonder if on balance, attempting to block punts hasn't cost us more than we gained from the successes. I've not ever tried to tally it up though. I'll add getting caught by obvious fake punt situations to that list.