This is his worst-case scenario, IMO. Sanders receives 207 electoral votes to the Republican's 331.
Obama 2012 is probably his best case scenario. Each of those maps could happen against any candidate. The candidates are really far less important than the structural factors at play. The Democratic base isn't going to stay home if the alternative is another Bush in the White House, or a Ted Cruz, or whatever. And base turnout is what matters; swing voters are a myth. New Jersey won't be swinging any time soon.