There are some core unit problems that make realism difficult. OKW and OST being in 1944/45 with some units having futuristic abilities make such absurdities as the SU76 penetration necessary for the game to be competitive.
If you wanted realism, the stock Russian tank for that time period would be the T34/85 and the TD would be the SU100. Germans wouldn't have CAS, the USF would have CAS and it would be really cheap. One shot from a Panther that hits any US tank would knock it out, but a Firefly would do the same to the Panther. In a game like this, micro wouldn't matter as much.
There is a mod for the game that is a lot more realistic. Search for "Spearhead" in the mod shop. Most people won't like it.
