That’s slightly out of date. The latest US News ranking for universities has ND at #18 and USC at #23 overall. But yeah, the difference is irrelevant.
http://colleges.usnews.rankingsandreviews.com/best-colleges/rankings/national-universities/data
Here is the link that referenced undergraduate business specifically. It only shows the top 10, but both ND and USC are there at #10.
http://colleges.usnews.rankingsandreviews.com/best-colleges/rankings/business-overall/data
The schools are pretty much peers. In the US, both schools are known more for athletics than academics. My wife is from Taiwan and says USC is well known there. I’m not sure how well either school is known in Europe.