Liberals have higher IQs than Conservatives on average. At least as I’ve heard. Well, from the media, anyways. I’m guessing 5 points. But that is not the whole story. There is EQ. EQ is “Effective Quotient” which measures how effectively one uses their intelligence. Other than some Silicon Valley tech CEOs, on average, the EQ of Liberals are, guessing, 15 points lower than Conservatives.
Another measure to consider is character. Do you really want to argue which political philosophy attracts those with the most character on average?
Now back to the conclusion of my post you quoted. Regardless of how smart Democrats are relative to Republicans, are we better off being led by a hidden third party who is more focused and intelligent than what any of the political Parties have to offer?