Don't shoot the messenger, folks, but here are the facts.  I just checked with Slate's Delegate Counter (which has already updated with results from PA, for some reason giving the delegate split as the +16 which was said to be the most favorable possibility for HRC), and, after playing with the sliders for awhile, can actually see a scenario where Hillary Clinton could wind up with the lead in pledged delegates.  Assuming that superdelegates would never dare to overturn the pledged-delegate result, this shows the way that Hillary can still win the nomination fair-and-square:

...which is not the same as "insignificant," but a fitting reply to the Clinton goalpost-moving strategy that, essentially, translates to the notion that only the states in which they have the advantage should count.