Ernie is in a class of his own, come on. He had 0 redeeming qualities as a GM and simply lucked in Gilbert Arenas being awesome for a couple years (but Ernie messed that up, too) and then getting John Wall. Guy is in the HOF of terrible GMs across all sports and the fact that Ted let him hang around so long is a huge black mark for Leonsis. Ted is lucky the Caps finally did the damn thing.
Rizzo has his blind spots and failures as a GM but he's above-average in his own sport and generally does a good job every year.