I think what they have is the focus and clarity to pursue intellectual pursuits more...diligently, then the average human.
A Vulcan probably spends decades on their education alone never mind what they do with that education.
Humans would have a broader sense of life and how to live it.
But a human who puts in the effort and time is probably a match for the best and brightest Vulcans.
As was said by C.E, they are intelligent but are they smart?
How much did T'Pol keep bringing up the dogmatic response that time travel was impossible...even when she saw evidence of it happeneing.