How can you even question this? There are three top notch programs in the big 10 simply by size and prior success - Ohio State, Michigan, and Penn State.
Those three teams are going to be at the top, even if they have lower quality coaches. Really, it is that simple. It is NOT more complicated.
Any coach at PSU should have a record around 0.700 winning percentage, simply because they are going to have better players.
Any coach at Michigan and Ohio State should be the same.
That's why fans at Ohio State are happy with their coach - because they know he's clocking in above the long term average they can expect.
That's why fans at Penn State and Michigan are not happy with their coach - Michigan because they're underperforming, and us because we're neutral.
That's it.
You are normally a rational poster, but you're not being rational here.