While that's somewhat true, looking at their schedule from last year exposes them as frauds. They won 10 and lost 3. Those three losses were to the only respectable teams they played all year, minus maybe BYU. Utah looked great for a while, but then USC (a team we beat) exposed them badly. They finished as a pretty good team, but a team we'd likely handle. I don't know if there will ever be a playoff team as unworthy and overall as bad as Michigan State. I'll admit that Michigan should've won that matchup, but the fact remains that MSU wasn't a good team last year and slipped in by virtue of Urban Meyer laying the mother of all eggs from a coaching standpoint against them. Then of course, Ohio State woke up and curbstomped the skunkbears.
And yes, I'm aware they played Northwestern. Northwestern was a complete joke last season. The fact that they were 10-3 is not a testament to their success, but a testament of just how downright atrocious the Big Ten West is. It's bad....REALLY REALLY bad.