Of the bottom 10 or so turnover teams that are visible. Here is the quick run down. Spoiler alert it's not the balls.
NU - Adidas, Illinois - Nike, Washington State - Nike, Purdue - Nike, Ole Miss - Nike, CU - Nike, Maryland (covering another school) - Under Armour, Texas Tech - Under Armour, Duke - Nike, Kansas - Adidas, Indiana - Adidas, Oregon State - Nike, Michigan - Nike, UNC - Nike, I am going to stop there.
Most schools have Nike, So most turnovers, most wins, etc will be Nike.