That adds up but why go back 15 years? I think 2011 would be a good starting point. It'll still be in Iowa and wisky's favor.
Iowa fans will always start at 2002, the year they were boat raced in the Orange Bowl. Next year it'll be same article, but in the past 16 years. If we go back 15 years, might as well just go back an extra five years to 1997. 15, 20, both equally as irrelevant in today's CFB landscape.
As middling as Nebraska as been since joining the B1G, neither Wisconsin nor, particularly, Iowa have been setting the world on fire.
Here are the win totals from 2011-16, including the national rank of those wins:
Wisconsin = 60 wins (10th nationally)
Nebraska = 52 wins (tied for 23rd nationally)
Iowa = 46 wins (tied for 43rd nationally)
Here are the division and conference titles from 2011-2016:
Wisconsin = 4 division titles = 2 conference titles
Nebraska = 1 division title = 0 conference titles
Iowa = 1 division title = 0 conference titles
Here are the major bowl (Rose, Orange, Fiesta, Sugar, Peach*, and Cotton* (*from 2014 on)) appearances from 2011-16:
Wisconsin = 3
Iowa = 1
Nebraska = 0
Here are the AP Top 10 finishes from 2011-16:
Wisconsin = 2
Iowa = 1
Nebraska = 0
The B1G is playing around with end-of-year scheduling to see what works and, given its history, to be more equitable to teams in the division.
The idea that Iowa has supplanted Nebraska over the last six seasons is not supported by the stats. Nebraska has more wins and the same number of division titles, while Iowa had one top 10 finish. Nevertheless, it's clearly time we get our sh*t together.