Since we don't have out of conference games to gauge relative strength between conferences, we might look at the relative talent on the opponents teams.
A&M played 9 games, with 8 (89%) of them coming against teams in the top 25 of composite team talent this year. We went 7-1 against top 25 teams based on recruited talent.
Notre Dame played 11 games, with only 4 of them coming against teams in the top 25 of composite team talent (counting Clemson twice). They went 3-1.
Despite playing two more games than A&M, ND played half as many teams with top 25 recruited talent on the roster.
Ohio State played just 6 games, and only 2 came against teams in the top 25 of composite team talent. They went 2-0. A&M played more teams with top 25 talent than OSU even played this season.