...only very marginally more?

What property, if not intelligence, do you think makes people capable of rallying political support? Of working quickly though permit processes? Of providing accurate drug dosing guidance? Of presenting as a trustworthy personal healthcare guide? Of negotiating political deals? Of making effective public communications? Of juggling independent parties' interests? Of coming out ahead in contracts? Of producing alternative antibiotics? Of detecting and handling drug resistance in the wild? What answer could your questions possibly have other than this?

I hope you're joking about...

I think we both know the answer, but the answer very definitely isn't intelligence.