Well there are various threads on tanknet on the FCS capabilities of various tanks, particularly a thread on FCS I started recently that indicate that the soviet era fcs was pretty comperable in terms of functionality to western models.
Also, while I'm frankly not one of these soviet supremacists I do think they should get a fair shake, and the overal flavor of the game still strikes me as stuck in the 80's mode of horde of inferior tanks stage, which at this point from all I've read probably isn't all that realistic. Over all the years I've played SP/SPMBT/winSPMBT I think you've all done a pretty good job in most regards i.e. armor and gun accuracy and so forth, and all I'm trying to do is to get better information for the rest.
As for my descriptions: I posted my sources in the oob forum regarding specifically the T-64B/earlier T72's.
Also I've started a thread on tanknet that has some usefull information on various FCS.
http://63.99.108.76/forums/index.php?showtopic=17219