None of the post March 15 states are terrible for Bernie, including the lone former confederate state.
None of them? Well surely that's not true. What about Maryland? It's 61% white and 30% black, in comparison to 60% white and 31% black in Georgia. It's also less white then Louisiana (64% white) or Alabama (69% white.) That's probably going to be a blowout. There's also states like New Jersey and New York that I'd bet dollars to donuts are going to be pretty big blowouts for Clinton.
Clinton's also posted huge leads in random other states like, off the top of my head, Arizona: http://www.realclearpolitics.com/epolls/2016/president/az/arizona_democratic_presidential_primary-5466.html
There are at least a few huge Clinton blowouts left.
Whites in Maryland are considerably more Democratic than whites in Georgia and Louisiana....
Not saying the state doesn't obviously favor Clinton, but just because the overall % of blacks are about the same, doesn't mean the actual Primary % will match.