Saunders would have buried him.
Perhaps that aging hippy Bernie Sanders SHOULD have made a more sustainable run for the nomination, and Joe is just enough of a gentleman (I use that term loosely) to allow Bernie to make significant inroads on the Democrat base. Herself, of course, with an unassailable claim on the “right” to the nomination, simply bulldozed everybody else out of the way.
Which makes every other assertion about “woulda, coulda, shoulda” pretty much a moot point.