1,https://www.bilibili.com/video/BV1L3YfzdExN/
2,https://www.bilibili.com/video/BV1B541157eG/
(OR 国防科工_CCTV节目官网)
These two videos shows Amor of ztz 99a should have thicker side armor than it in game(I mean you should change 50mm in game to 80mm). And if your guys think ZTZ99a is based on T-72, it should has as thick as its side armor (80mm).
You can bug report it here (just search a bit first so that you don’t report something that is already reported and known about): (Gaijin.net // Issues)
A guide on how to report bugs can be found here: ([Navigation] Technical Knowledge Base | War Thunder Wiki)
He already bug reported it
However the sources provided can barely be considered secondary sources
