do not bring arjun in this thread, go to arjun thread where the fantasy with all its loopholes is pretty much busted down the drain.
on mbt3000/vt-4, it is the search for an advanced mbt to fit in by replacing obsolete 59s and 69s mostly non alzarrars. If vt-4 was that high tech, HIT would have abandoned the AK-I project long ago which apparently continues to this day. for a comparison between AK and vt-4 technological aspects, it is too early to speculate as no one knows the exact details.
However, the notion that it is a generation ahead of AK is simply false to say the least. From thermal imager, fcs, hunter killer and multi target cueing, rcws, advanced armour, AK has been using these since 2002. Heat ammo can be fitted if army requures, gun is compatible with it.