As an outside unbiased hockey fan, I always thought Q was a middling mediocre coach. Then he went to Chicago and fast forward to now national announcers praise him as some sort of genius, a HOF coach, the job he'd done in CHI etc. but I don't think coaches just suddenly become "good".
Methinks he just sort of game managed (to steal a NFL phrase) great rosters put forth by management and sort of let them do their things, to the extent a coach can
Again, I'm an unbiased non Blackhakws fan so feel free to tear my opinion to shreds