It's the only case they can make. They will be trailing in pledged delegates going into the convention.
The rules of the game are to tally up delegate and superdelegate votes at the convention. Obamaites are saying if the Clintons get the superdelegates to vote for her, when he has one more regular delegates, that thatll be unfair insider trickery.
That's the current perception, i.e., Hillary will have to steal the election using super delegates to win. Pelosi and other party leaders have already said that whoever has the largest number of pledged delegates should win. In this case, perception is reality.
But if Hillary can rack up enough of the popular vote to say that no, the superdelegates are actually just righting the injustice of the delegate count not having reflected the majorityand the superdelegates are just as much a part of the process as the regular delegatesthen the superdelegates will be bringing about the rightful result.
Obama and black voters will never accept such "sophistry." They will blame the result on racism since most of the super delegates are white.
Now, you're starting to get it.