This is a really great question in even larger contexts. What really makes a good coach? There are a myriad of variables at play. Obviously team success becomes the largest identifiable measuring stick but how tightly does that correlate? How much of it is having a floor of being overall adequate but then the larger variable is being the right guy for the right time/situation, or being able to be there without ****ing it up. I don't think people appreciate how easy it is to **** something up and that it's pretty much the default. Luke Walton didn't **** it up during their run, but also wasn't very remarkable in other contexts. Even beyond coaching, how many Jeremy Lins are out there that you could just plug in to the right situation? On the flip side, how many guys who got plugged into the right situation do we universally identify as being good/valuable but could have very well remained irrelevant to our perceptions had they not landed in those situations? Joe Ingles could have very well never made it in the league. I think there's just this idea that ascending to professional levels is predestined or that if you have the talent and work ethic, that's the only variable that will get you there. How tightly does our perception and consensus align with reality? It correlates, for sure, just not to the degree we would want to believe it does. Is Kerr a legendary coach? Surely he will go down as such. Would he had he not bailed on Phil Jackson and instead took that Knicks job? He'd be doing broadcasting right now. This isn't to say anything good or bad about his abilities as a coach, just the reality.