Harbaugh will fail in the NFL imo. It's moved EVEN MORE towards a passing league in the nearly 10 years since he's been there - and he just has NO f***king clue how to do that. His big success in San Fran was with Kapernick - who sucked at throwing the football - but was a great runner. And what was his success? Super Bowl runner up. He didn't win a Super Bowl.
Name me a team that has won a Super Bowl with a primarily running QB in the modern era and I'll shut up and listen. You need a pocket passer. Tom Brady, Peyton Manning, Big Ben, Rodgers, Mahomes - have to be able to throw at an elite level from the pocket to win.
Dude just has no f***king clue when it comes to the pass game - and that's not going to fly in todays NFL.