That is definitely not a true statement.
"What's True
Bernie Sanders trailed Hillary Clinton by just 290 delegates in the Democratic presidential nomination race on 10 May 2016 if superdelegates were not counted."
That's far from "wiping the floor".
Using the power if the biased media machine...they padded the count with superdelegates to give the APPEARANCE that Clinton was mopping the floor with Bernie in the primaries.
It was a dirty trick that cost Bernie votes.
No two ways about it...and I have no dog in that fight.