If someone is talking about "What The Facts Are..." when it comes to what will be a risk when it comes to the next General Election?
Then, yes. We had better be able to safely assume that someone doing so can easily put together the obvious case for why Sanders would have better numbers than Biden in Michigan.
Otherwise, you have someone making the same case for what "The Facts Are..." that wound up paving the road to a Trump win the last time out. Assumptions about the numbers and what they meant were an obvious aspect of Trump winding up with the 307 that people believed HRC had in the bag.
Buying into that sort of thing a second time makes right around "Zero..." sense.