Human polls are fraught with bias and fuzzy logic-- no denying that. Bias is what human beings do best. But I don't see any particular SEC bias being manifested in the current AP poll to any large degree. If you look at the unbiased systems (systems that do not give any input/weight to conference, "prestige", tradition, etc., only results:
http://www.masseyratings.com/cf/compare.htm), there are five SEC teams in the top 10. Georgia is the only SEC team that is, in comparison, notably overrated in the AP (13th vs. 18th). Most of the top 25 SEC teams are actually
lower in the AP than in the computers.
The most overrated teams in the AP (vs. unbiased) are Wisconsin (Big 10, 17th vs. 24th), Ohio St. (Big 10, 20th vs. 27th) and East Carolina (American, 22nd vs. 29th), all seven spots higher in the AP poll.
FWIW - TCU and Nebraska are currently the most underrated. Nebraska is 12th in the computers.