Years ago I remember the mil-heads in my group talking about this thing. If I recall (and they were right), the T-80 has one less crewman than the M1A1. An autoloader replaces the crew loader. Unfortunately, again as I recall, the early versions of this system had a tendency to load the gunner instead of the round. This was, as you would imagine, a less than desirable feature.
I would figure that some fifteen years later (assuming the story is true at all) they've gotten that all figured out. Watching the video makes me glad the USSR isn't around any more.