One thing I Know for sure is that the DTM defo hasn't got the T-3 Torsen quattro with the 60/40, The only B7s to get this were S4 & RS4 where the rest had T-2 50/50.
The suspension I'm not sure about, its defo listed as 20mm lower but weather thats next to an S-line or not I don't know, I doubt it though. Most would asume its the same as the S-line SE but as the DTM is a quattro GMBH built car & the S-line isn't they would have most probably tweaked it, the overall ride hight might be the same but shock/spring rates may differ.
Cheers Ewan.