—“Is intuitive capacity measurable?”–James Lyons Sr.
Yes. We do it all the time. Raven’s Matrices.
That said, general knowledge combined with ordinary ability, and intellectual honesty will always achieve more than exceptional ability in the absence of general knowledge and intellectual honesty.
Intelligence is only enough for complexity.
Conscientiousness is only enough to work hard on a problem.
Intellectual honesty is required to come to the right conclusion.