The DNC superdelegate argument is tough because Hillary still won the popular vote.
He was saying that the fact that the superdelegate system exists is a factor, not just its results.
C’mon, man. You think the party that holds unelected, unpledged, and unaccountable delegates could not select a candidate contrary to the popular will of its constituency, and thus lose the chance of gaining the popular vote in the general election? You think the party that deliberately sabotaged the leading competitors campaign bears no responsibility for the final outcome of the 2016 election? In terms of elected delegates, Bernie and Hillary were pretty close, almost coming in even at one point. Imagine, without the superdelegates counted in the mix and making his campaign look less successful than it actually was, how the momentum might have swayed further in Sanders’ favor. Sure, we’ll never know how it might have turned out. I do know that the DNC shot themselves in the foot by how the whole process was handled, from the institutionalized superdelegate system to the corruption of the 2016 Democrat primaries.