Well, it depends what kind of CoSim disciple you are...
This review/article sums it up, e.g. the difference between TOAW and, let's say the PC series from HPS.
http://members.shaw.ca/gcsaunders/what_vs_toaw.html
There's also a VERY good one written by Norm Koger, the "master" himself about the mechanics and other stuff (his reply to a grognard article).
http://normkoger.com/truth.html
DB series from the Oz lads of SSG normallly got a good A/I (even back in the 80s, CAW, Erope Ablaze, etc.).The scale, unti size, well... yes, more or less operational, but they focus more, like the title says, on decisive battles or part of'm.
DC... well, I played Advanced Tactics and People's Tactics... as far as I know it includes production, strategic etc. settings and options. Maybe the other lads here are more into tha'. Scale/Unit size, yes, operational I'd say. 1 day turns, Regimental units etc.
For the record - NO, I am not on the payroll of MG, SSG, HPS - only STALAG 13
kLiNk, Oberst