The Russian army had established air-superiority & numerical superiority in Georgia(hence no massive opposition); however Georgian T series tanks have shown extreme vulnerability to Anti-tank weapons in the very same war.
The problem i have with the T-90 is that the Russian military has itself admitted that the T-90 is not it's future tank, that is going to be the T-95; i would not want to advocate any tank that the home military does not want.
However i am intrigued by this T-90 in the Kadori gorge, could you please elaborate
Disclaimer:i do not have anything against Russian tanks they are some of the best in the world; have been inside a T-72 & Bmp-2 know what it feels like!