Question is (as for the gun), how could the ingame armor ratingsrealte in any reliable way to the actual properties of a tank, of which only one or two prototypes (mockups?) have been rolled out, the (projected) series version being largely different?

Just nitpicking...
And, well, 2006?I hadn't checked that recently, but that is sure optimistic (hell, the year isn't over, who knows?). Now adding that mean-looking
K-2 MBT would be interesting, though maybe overly optimistic too!