I've attended 2 UM games there in the past 25 years, and there is nothing remotely close to the atmosphere of that rivalry in that stadium for that game I've experienced that comes even close. Including BYU/Utah (I've been to 6 or 7 of these), which is a great atmosphere, but which I would rank as a microcosm of The Game's atmosphere, at probably 1/10th the scale.
Have also been to both Notre Dame and SC and attended the actual ND/SC Rivalry game in LA — not even close.
GO COUGS.