The SEC is ridiculously top loaded. It's not just about Alabama, Georgia, Florida, LSU, Texas A&M, and South Carolina being highly ranked. It's about the fact that those six teams have only lost to each other. We'll know more after the ACC games, but while this might not match the undefeated Alabama vs. Florida in 2009, or the 2011 Alabama, LSU, and Arkansas trio in terms of elite at the very top, the depth at the top looks pretty darn deep. If the SEC beats Georgia Tech, Florida St., and Clemson they'll have made an extremely powerful argument that a one loss SEC team is better than undefeated in another conference. If the SEC drops a couple of those though, it will really hurt the case and bring up the possibility that the SEC just doesn't have any elite teams this year.
In another conference, or another scenario I think any of those six are legit title contenders. As it is, only two have even an outside chance. I also think some of the losses you have seen are more an issue of match-ups, or teams being banged up. They've all taken their turns playing less than stellar games. More so than anything else, it's like NFL match-ups. The players are so good, and the margin of error so small that it's virtually impossible to be undefeated.
I'm not sure how Georgia will look against Alabama, but if they show up like LSU and Texas A&M did, Alabama will have their hands full.