Those “statistics” are attempting to polish a turd.
Here’s an article, admittedly from last year, but to me the stats listed explain the situation a lot better. BTW, he ranks Chambers 14th in the B1G (a bit harsh but it’s difficult to disagree with him after this year).
https://www.cleveland.com/osu/2018/01/ranking_all_14_big_ten_basketb.html
Holtmann, Miller, and Underwood are all in their 2nd year so we’re talking a small size sample to draw from, and last year was their first year with their respective teams so an opening loss in the tournament isn't something terribly unusual. If you’re going to give props, I’d give ‘em to Pikiell and Gard for sure given that between them they had only 5 seasons as of last year in their current HC jobs but both had non-losing percentages. As of last night’s debacle, Pitino has passed Chambers on that list. So has Tim Miles, for that matter. Mark Turgeon doesn’t care about this stat, MD is going to the Dance regardless. Iowa might, too. After last night, Chambers has dropped to the bottom half of that list.