No, he barely won against an idiot in 2016, pair him up against literally any republican that is not a train wreck, and you have a huge uphill battle for Cooper.
He was running against an incumbent who was literally coming off of great publicity for his handling of the hurricane. Also, blacks underperformed their projected slice of the electorate by four points. And of course, HRC. If he wasn't facing those headwins, Cooper probably would've won by more like 5.
This stopped HRC from flipping the state and getting Trump's Michigan margins.