Certainly there are facets of creativity that are different from intelligence and I am not saying creativity and intelligence are synonymous. Yet I think what these studies suggest is that there is probably more overlap between intelligence and creativity than we realize.
These are the six pairs of Opposite Signs: Aries/Libra, Taurus/Scorpio, Gemini/Sagittarius, Cancer/Capricorn, Leo/Aquarius, Virgo/Pisces. When your Sun Sign is in the Sign which is opposite another person's Sun Sign, you are complementary opposites. What you lack, they may have. And what they lack, you may have.
(In the case of Leo rising, of course, the Sun is the ruler of the rising sign.). The best way to understand the rising sign, or any part of astrology, is to understand the sign in question first. Leo is Leo, but how it is expressed is dependent upon where it is in the chart.