Good question. However, the SEC is absolutely loaded with top flight RB talent this year. Throw a blanket over the top 4 IMO, Lattimore, Dyer, Richardson and Davis. All horses. Then you throw in the fact that UT returns a 1000 yards rusher and several other teams like MSU, OM and Auburn who had guys close to that mark....and it's clear that the SEC is going to be ground and pound this year.
As for MD/TR....if you step back and look at the two without orange and blue or crimpsum colored glasses, I think it's fair to say that you simply can't separate the two at this point. TR started out as the man with Ingram being injured early on, then had to share the load as Ingram worked back into playing shape. Dyer, didn't start out as the feature back and got more and more reps as Fumbles McFannin showed he couldn't handle the spotlight.
They're both physical freaks and both ran behind stout O-lines. Personally, I think Dyer ran behind the best line in the country....certainly the most experienced. Nope, Dyer isn't getting the same preseason love but this year, they both start as the #1 guy and have the chance to prove it.