Probably not. I don’t recall ever reading anything by him, but remember him saying in a television interview at one point that former governors, generally speaking, have more successful presidencies than congresscritters do. And I’ve heard this “governors more successful than others” repeated so many times during political commentary that I have developed the impression that it’s pretty much accepted political wisdom. I’ve certainly never heard it challenged.
This is sort of intuitively sensible, since a congresscritter or a senator doesn’t manage anything larger than their congressional office, while a governor manages what is (without the foreign policy aspect) in essence a microcosm of the larger federal government.
Obviously, the term “successful” is somewhat subjective.