I'm not sure how you define good teams, but I just named a list of bowl eligible teams that are considered football powers. Oklahoma won a share of the Big 12 title, Miami should have gone to the ACC championship game. I think the SEC is by far the best conference in the land, but this everyone not in the SEC sucks stuff is a little much. If you think Oklahoma would have struggled against Western Kentucky you need to check your premises. They only lost to national title contenders.
I do think Alabama's schedule was more difficult, as I said, from a physicality aspect. Notre Dame absolutely did not play a soft schedule. They played at least one upper level team from the ACC, Big 10, Pac-12, and Big 12.
I think the Oklahoma vs Texas A&M game will tell us a whole lot about what to expect though. Oklahoma was probably Notre Dame's best game and A&M was probably Alabama's worst. If Oklahoma wins that game, or it's very close we have cause for concern.