Ronnie has a much better taper in the rear lat spread than dorian, thanks to his tiny (in comparison to dorian's) waist.
I mean look at this:
in addition, Dorian displays loose rolls of fat and skin at the base of the lower back in the pose, while Ronnie displays striations from his christmas tree.
in width they are close, but ronnie wins on everything else and all fine details except for calves, which he looses by a country mile.