Well said above and reality is no law school is really any easier or harder you pretty much learn the same thing. Also with Cooley academic dismissall is far more common than at MSU and I imagine that would make it more stressful. There are also many more students at Cooley so it is easier to get lost in the shuffle. It is possible you will rank higher at Cooley than MSU, but if you go in with the attitude of it being easy you will likely do very poorly. Law school in the first year is extremly difficult no matter what school you attend.
Basically, whether or not Cooley is easiier or harder should be on of the last considerations when making your law school decision.