For Mike Tomlin, the easy decision would have been sticking with Justin Fields. The Pittsburgh Steelers were 4-2. Most head coaches mindlessly stick with the status quo when they're winning games.
By now we should understand, Tomlin is a good coach for a reason.
Tomlin went to Russell Wilson, and Wilson played well while the Steelers set season highs in yards and points against an allegedly talented New York Jets defense. They're 5-2 and while that's a surprise, the foundation for the Steelers is solid as always. The Steelers still have to battle a tough remaining schedule, though that looks a bit easier now with the Cleveland Browns falling apart.