seems to me like they are but sports analytics suggest they aren't.
i generally exclude huge spread "out of conference" games vs. FCS or very very poor FBS teams.
did some really basic analysis and found top 6 teams this year are 33-21 (ala, mich, clem, wash, ohs, louis)
last year, top 3 were 22-21 overall, albeit only 3 teams and includes conf championship and playoffs with tougher games and doesn't filter for high spreads.
one big thing is fading alabama as good-sized favorite was gold before this season... but they are 8-2 ATS this year.