TO's first rankings as head coach were: 4th, 7th, 9th, 9th, 9th, 12th, 8th, 9th. These are all better than Pelini has produced. (14th was the best and was done with Cally's recruits.) If you're waiting for a top-notch team out of Pelini, I'm guessing you'll be waiting more than another 4 years.
Using today's standard, Devaney would have been canned after back to back 6-4 seasons in 1967 and 1968. Luckily, smarter folks prevailed.
TO inherited a team from the Bobfather that went 11th, 1st,1st and 4th.
Do we need to review the national ranks of Cally's teams? Bo didn't inherit a successful program a year removed from back to back MNCs like TO did.
No real comparison there.