It pays to be a "jack of all-master of none"
I prefer to be average. That way you're not expected to be extraordinary and will only shoulder the load you can handle.
People who excel in the classroom tend to think in a linear fashion and will bang their heads on a problem repeatedly. Thinking that it will change the result. I think that's also the definition of insanity.
4.0 is not better than 3.8.
One of my instructors in Electronics school summed it up succinctly...
"Information need not be stored by rote. You only need to know how to find, recognize and apply the information you need when you need it."
~Fred(Captain Caveman)Snyder