There's no substitute for experience but that experience is used to much greater effect by someone who is intelligent.It's a self esteem issue. "You might have a high IQ but I have common sense."
It is far more than that.
If you had to hire an expert to build you your house you will live in the rest of your life, would you pick a high IQ architect right out of college or a builder with no degree, average IQ but 30 years of experience in the house building industry?
Think about that for a minute. That is high IQ vrs common sense.