Possible unintended NTW damage changes (8.4.1)

Update 8.4.1 states the following:
Reduced AP rounds damage relation vs medium armored vehicles.

The NTW (front or side hit, using the standard ammo, point blank so no damage drop off) used to deal 16 damage to a RAM and now deals 12. 

This doesn't seem to be the stated change as:
The NTW doesn't have AP ammo (it has Anti-Material and HP Anti-Material).
The RAM isn't a medium armor vehicle (it is in the Heavy Armor category).

I also suspect that the damage has been reduced against other vehicles too but I can't remember how much it did against any other vehicles. Is this the intended change?