Its semantics, but I don't think of having adidas as being unique. Unless you consider anyone not having Nike to be unique. Maybe 15 years ago we were unique in having adidas.
From last year:
Total FBS Schools:
Nike 74 (57.8%)
adidas 28 (21.8%)
Under Armour 21 (16.4%)
Russell 4 ( 3.1%)
Power 5 Schools
Nike 44 (67.7%)
Under Armour 11 (16.9%)
adidas 9 (13.8%) - Louisville, Miami, NC State, Indiana, Nebraska, Kansas, Arizona St, Mississippi St, Texas A&M
Russell 1 (1.5%)
http://footballscoop.com/news/nike-adidas-or-ua-who-wears-what-in-fbs-2/