I guess we all use measures that support our beliefs. For me, a single NCAA run is a weak measure of a coach’s sustained success. Kind of “even a blind squirrel finds a nut every once in a while” type of event. The tourney is such a random mix of who is hot, match ups, and weird one-off situations, that almost any unlikely team can progress beyond their true capability once.
I tend to look for sustained success. Is the team regularly in the sweet sixteen?
By only looking for sustained success and/or regularly in the sweet sixteen one discounts non-power 5 conferences and coaches that are within, say, 6 years of taking a head coaching job.
According to TOS "Miller's abilities as an offensive coach have probably been understated. In five of his six years at Dayton, his teams posted an adjusted offensive efficiency inside the top 75 nationally..." But these numbers also may be misrepresenting CAM's abilities both pro and con. In Dayton he may not have been able to attract the level of recruits that he may get at IU. Also in-conference competition may not be up to that of the B1G. In 4 of 5 seasons, Dayton was in the top 53 in adjusted offensive efficiency...very impressive to me.
Plus, Dayton teams got to the foul line...in the top 75 nationally in his last 3 seasons (FTA/FGA). In 2 of those years Dayton was in the top 10 nationally...showing me that Miller had an attack inside focus. We will see if that works as well in the B1G. Full disclosure shows that they didn't rebound well in his last 3 years...maybe because of his focus on getting back on defense.
They also had a relatively high assist percentage and ranked in the top 30 for 2 years. They were rather efficient on offense.
Of course on defense they were ranked in the top 41 in CAM's last 3 years.
Lots of the comparisons, one can state, really don't lend themselves to statistical comparisons. So rating one coach over another without a long view really becomes extremely subjective.
On that note...I'd much rather have CAM than whatever that Ag/Tech school up north has. Or even Izzo...