The last two paragraphs sum it all up extremely well. 

Trump must LOVE the Comey "sideshow."  It's such excellent obfuscation.  As is his retort that he's ready to testify any time.  Brilliant.  Not that he's brilliant himself, it's just that what he does instinctively works so brilliantly.  Comey--honest, humble, flawed to some degree--no, he doesn't work nearly as well.