How much of a difference does two years make? Plenty when it comes to ratings for Notre Dame.

Two years ago, ABC pulled a massive 10 overnight rating for major markets for the Irish’s victory at USC, which propelled them into the national title game against Alabama; 1 ratings point is the equivalent of more than 1 million homes.

Saturday, USC’s rout over the floundering Domers only did a 1.5 overnight on Fox, down 85 percent from the 2012 game.

According to Sports Media Watch, Saturday’s rating was the second-lowest of the year for Notre Dame. Only the opener against Rice, which did a 1.4 rating on NBC, was worse.

Meanwhile, ESPN was the big winner Saturday night with the Alabama-Auburn game. The Iron Bowl did a 7.2 overnight rating, tying the highest ever for a regular-season college football game on the network. USC-Ohio State in 2009 also did a 7.2.

Also, how great was it to hear Brent Musburger on the call of a big game? I know things change, but Brent still can bring it.