The highest overall winning% currently is .578. There were 7 teams last year that
finished at that number or higher, including Arlen William's .619. That's a difference of 40 wins right there. He also had 6 playoff teams accumulate over 100 bonus points.
https://www.whatifsports.com/mlb-l/WISChampionship2015.asp
The cut line last year was 555 points. This year, it projects to 570. Suffice it to say, the group is more bunched together than last year..