PIAT dealing more damage to rear of medium tank than light tank

Product: Battlefield V
Platform:Sony Playstation 4
Please specify your platform model. Sony PlayStation 4
Which part of the game is the issue happening in? Multiplayer
Which part of the mode? Conquest
Please select your region Europe, North America
On which server did this happen?
When did this happen? (dd.mm.yy hh:mm)
Summarize your bug A PIAT is doing 56 damage max to the rear of a light tank (and the turret at any angle, and sides). But a PIAT can do 61 damage max to the rear of a medium tank.
How often does the bug occur? Every time (100%)
Steps: How can we find the bug ourselves? Test PIAT against rear of the tanks.
What happens when the bug occurs? More damage is done to the medium than light tank
What should be happening instead? Medium tank should be better armoured than light tank

‌

Thanks!