A comparison of the tenures is a battle of bad vs. worse. It’s well known by now that GOP presidential hopeful Carly Fiorina has never held political office and is running on her business record. As many commentators have pointed out, that’s a dicey proposition since her highest-profile job as CEO of Hewlett-Packard from 1999 to 2005 was sort of a disaster.But in an interview with Fortune contributor and Yale School of Management professor Jeffery Sonnenfeld, GOP frontrunner Donald Trump—who has made a habit of criticizing Fiorina—took aim at a different stage of her career.When asked about what he thought...