Ron Johnson’s 17-month tenure as J.C. Penney’s CEO was a catastrophe — an assessment captured in the coverage of his ouster this week: “Former Apple Retail Guru Dumped;” “How Ron Johnson Made JCPenney Even Worse;” and my favorite: “I Am Become Ron Johnson, Destroyer of Worlds.” It’s true. Under Johnson’s leadership, Penney’s share price plunged by half and the company lost $4 billion in sales.