No knowledgable person would question the IQ of either of them; they are both extremely bright, competitive and well educated with extensive real world experience in politics and foreign policy.
Condoleeza Rice has the distinction of being one of the prime architects of possibly the worst foreign policy strategic blunder in the history of the United States, (if not the world). And she doesn't have the luxury of Americans' short memories in her favor, it is occurring in real time right now. Intelligence ceases to be an advantage when one is a "True Believer" like the neocons with their direct line to Jesus, all evidence to the contrary of your plan becomes heresy.
Also, I think that it is unfortunate that a candidate's bedroom life gets dragged into things, but there it is. The mouth-breathers on the right openly acccuse HC of being a dyke, now they want to run the gayest woman on earth?? HC is at least married w/ a child, for chrissakes. It should not be a factor, but thanks to Republicans and the religious right it is. And CR's personal life is, well, strange.