http://www.army-technology.com/projects/mbt_law/
"In the Predicted Line of Sight (PLOS) mode, the gunner tracks the target for three seconds and the missile's guidance electronics makes a record of the gunner's movement as he aims and computes the flight path to the predicted position of the target."
So we have a ballistic computer, but the projectile itself can not correct its flight path during flight, so no ATGM there although it is referred as a missile.
Given that the PzF3 IT-600 should have a ballistic computer and laser rangefinder, giving it acc. 5 and MBT LAW acc. 80 is misleading.