East/B1G... Toughest Division in College Football?

Buckeyes and Sparty #1 and #2... TUN on the rise. Indiana knocked off the SEC East champ in 2014...  And played very tough yesterday...

Ohio State 5-0 
Michigan State 5-0
M*chigan 4-1 (only loss to a top-10 team)
Penn State 4-1 (only loss to a 4-0 team)
Indiana 4-1 (only loss to the #1 team)

Early, but still impressive.