His situational coaching will be a instant improvement. Will likely get us 2 more wins per year. Which would have been enough to get us to the playoffs this year.
Sure, I think he is that much better than JG to get more than 2 extra wins, probably more like 4.
The thing where mike and other good or decent coaches falter is in the playoffs.
I think for sure dallas makes playoffs his first season, but the big question will be how will he do in the playoffs.
JG did more than falter in playoffs, he would blow the div game big time, but with mike I could see them getting past div round.
getting to SB or winning SB is a maybe.