Looking at non-conference schedules:
Last week I noted that the only "impressive" [sort of] win that the BIG12 has had was Oklahoma over Tennessee away. When you look at the SEC, that conference has played 45 games, only seven of which were power five conference games. {for reference, if you considered us "ACC" we'd have played two "outside" power conference teams ourselves with one more to come}. They are 5-2 in those games. It would be difficult to claim Louisville and Syracuse signature wins, so the entire SEC conference is hanging its hat on Alabama over Wisconsin {check Wisconsin's record, though}, A&M over Arizona State, and South Carolina over UNC. I doubt that anyone believes that South Carolina could beat UNC now, but it's a win. The SEC played five other non-power five teams which had a pulse: Toledo, ECU, Memphis, BG, and Houston. They lost three of those.
When you look at the ACC, the pickings are even slimmer. The only signature wins are Clemson over us, and Miami over Nebraska [by two and three points.] The ACC is a conference with a lot of sort-of good football teams which typicality play very hard and then lose. THIS SEEMS ALSO TRUE OF THE SEC. The differences are: the nation is historically hysterical about the SEC when [at least this year] they do not deserve it, and all of them get several "practice games" per year to refresh themselves in season.
Of all the conferences, the B1G has the most telling wins [seven vs decent out-of-conference power-five wins]. Northwestern and Iowa both have two [Stanford and Duke, and ISU and Pitt]. OSUs win over VT is sustaining it, and Michigan State's over Oregon.
Lost to many in this schedule business is the difference that a true football person sees not by looking at individual games in isolation, but by a more holistic understanding of what it means to have to play hard every week. Notre Dame, with the arguable exception of the UMASS week, is the only team in the country who has had to do that. In terms of Holism, OUR schedule is the toughest in the country, regardless of what adding up isolated bits-and-pieces might sum up to. True football people understand the power of the whole, rather than merely the parts.
So far Notre Dame is earning its way in, regardless of "style points." As Coach says: winning is hard. That's true for OUR schedule, but only about 60% true for everybody else's.