ND's would have as well if they were playing the competition UGA did.
Just to make sure our ND guests aren't thinking I'm just dissing their schedule, notice a few facts to back up this statement. Notre Dame's three opponents (and their rushing offense ranking) who fared best rushing the ball in 2012 were Navy (6th), Stanford (50th), and Pitt (89th). Collectively, these three teams were an average "rush offense" of 48th and they averaged 147 yards per game against the Fighting Irish.
Georgia's three opponents (and their rushing offense ranking) who fared best were Georgia Tech (4th), Nebraska (8th), and Alabama (20th)... I excluded Georgia State although they ranked 1st in the FCS because it's hard to compare. Collectively, these three teams were an average "rush offense" of 11th and they averaged 298 yards against the Bulldogs.
Now... I'm not saying UGA has a better rush defense than ND. However, I AM saying that if ND had to face the likes of the last four teams on UGA's schedule this year (plus FL), their rush defense stats wouldn't have looked so good. In the end, it might mean that if we had UGA's defensive front on the ropes by the 3rd quarter, it will be the 4th quarter before we get ND there.