The B1G does not have a collection of athletes like other top programs...Iowa had Murray...then who/what (his brother was their next best player)? Wisconsin had Davis, then nothing after. Purdue only has Ivey that is an elite athlete and NBA prospect. Illinois has Cockburn...Curbelo...a nice young guy in Melendez...but, they are not loaded by any means. Michigan's best player is a fringe NBA-guy and not an incredible athlete in any way. So, the B1G has talented individuals and good basketball teams, but, they don't have the collective talent of SEC teams, Big 12 teams, ACC teams, etc.
As for the whistle(s), or lack thereof, there is no question at all that B1G officiating is ridiculously different, and, not good...the B1G games are played in the 60s in general (and, sometimes they don't even get there when Wisconsin is playing)...the B1G style is generally a half-court, motion offense...B1G teams don't play a up-and-down the floor/push the ball/press on defense game that the other conferences do....the B1G has WAY more giant post guys taking up space in the lane, sitting only on the block than any other P5 conference...the B1G does not have guards that push opposing offenses out on the floor so that they can't initiate the offense like they are accustomed to that other conferences and teams do, and, the B1G, in most cases, does not have the collective guards that so many mid-majors and top P5 teams do that just break other teams down like happens repeatedly to B1G teams in the NCAA tournament. There is no question that guys that are athletes fare SO much better than the skill guys in the NCAA tournament, and, that guards that can create are huge, but, so are guards that create turnovers that lead to easy buckets (no better example of that than watching teams against Purdue). So, B1G style and how B1G games are called do matter, and, do not help...not for/with the typical B1G team(s).
Howard is different in all almost all of those ways...no coincidence that he has had success as such, and, he will continue to I have no doubt. Iowa is a little different, but, can't consistently get guys...they play the right style at least to allow for them to have a chance, they just don't have the talent (and, even in their case, they were lulled into the B1G "model" recently where they played through Garza and it took them absolutely nowhere outside of the B1G. Illinois has the athletes, but, Underwood does not play the right style either...at least not with Cockburn as the literal center piece. MSU has the formula in general, but, has not had the same level of talent that it has in the past...if they did, they would still be a national power.
Painter unfortunately has the double whammy working against him...wrong personnel AND wrong model offensively. And, the fact that he just is who he is with respect to what he believes in. Keady was never a guard-centric guy...and, never a guy that wanted to press and run up and down the floor, and, like his protege, would never entertain the idea of playing zone defense simply because he did not like it.
And, in hindsight, the timing of Lutz AND Shrewsberry leaving could not have been worse, and, they did not get better as a staff with the guys that they brought in/back...and, to some extent, I hate the idea of bringing guys back even...when you have failed as they have collectively for as long as they have on the national stage, you need to look outside of the "family" and familiarity...he did it with Shrewsberry initially, and, benefited more actually the second time. Johnson did not introduce anything this year, and, Lusk certainly did not add anything...at all...from a defensive perspective.
There are B1G problems working against Purdue/Painter, and, there are Purdue/Painter problems compounding it.