2015 Duke situation was kind of similar to that first VCU team that went far in the NCAAT under Shaka. Lightning in a bottle at the best possible time. Not even 7+ games, just the exact 6 games they needed (looked terrible in ACCT). With VCU, it was 3pt shooting. With Duke, it was opponent shooting. Without that, the numbers and results would look similar to all other seasons since 2011. More likely that those 6 games in 2015 were the fluke rather than 2012, 2014, 2015 regular season, 2016 and 2017 being a big collective fluke of poor defense.