Rush Limbaugh and other conservatives have expressed bewilderment over CBS’s abandonment of the “American Heartland” by choosing Colbert to replace Letterman. Ed Driscoll has contrasted the pick with the Letterman and Leno succession battle. But the real lesson of that battle is that while Leno won on performance, beating Letterman in the ratings, Letterman won on image, retiring as an honored figure, despite his abusive behavior, while Leno was booed out the door Leno is no conservative, but he left with the baffled bewilderment familiar to many on the right of being the better man who is despised for his...