https://fivethirtyeight.com/features/a-sanders-comeback-would-be-unprecedented/
I’m not sure how this relates to the current discussion.
Still not sure.
A Bernie primary victory would still be unlikely without superdelegates.
That article is talking about how difficult it would be for him to overcome his deficit as of April 2016, not how difficult it would be in January 2016 without superdelegates.
I think. Honestly I just skimmed it.