Is HEAT actually less accurate than APSDFS? AFVs aren't my forte, but a quick google shows that the Soviets seemed to have preferred HEAT (fin stabilized of course) for their tanks during the early cold war and actually found them more accurate than their APSDFS.
Of course I have no idea what the comparison is like now. APSDFS obviously has higher muzzle velocity, and in theory that should equal higher accuracy, but by how much, in practice?
Anyway, as for your photos, can you point us to the actual parts of a video which shows ZTZ96A making the shots that you say they missed? For independent verification.
And also show us the video of ZTZ96A shooting from a fixed position? Because I've watched quite a few clips of the biathlon last year and I don't recall ZTZ96A ever stopping to make a shot, then again I only watched maybe 20 minutes total.
Finally, this entire discussion is ridiculous if we don't have numbers for the overall accuracy during the whole competition for all tanks. You can put up pictures claiming ZTZ96A missed one of four shots and the three ones which hit having wide spread, but I'll then point you to a video demonstrating ZTZ96A making all its shots while travelling at over twice the speed of the T-72s it competed with, with some of the T-72s even missing their shots despite such a slow travelling speed
As for T-72BM3, if its FCS really was so capable while the tank was moving faster then why would they slow down so much for a competition that puts speed above everything else?