Hello, I'm the creator FW-190 pit. Actually, all the evidence the lack of visibility bottom of bulletproof glass, posted here, really do not belong to FW-190D. I built the front of the pit frame guided by the factory drawings, in which everything is exactly as you see on the 3D model. If you look at pictures of a real FW-190D, you will see that the "bar" is there. I actually believed that other versions FW have a different design of bulletproof glass and front part canopy as seen in the pictures.
Actually, the pit frame do not occludes gunsight, it is a perspective distortion caused a game engine.
From the point of view of the correct 3D model, everything accurately. The sight sitting at that height as the original. If developers decided that the issue of obstruction of gunsight really exists, the gunsight can be easyly raised up to 5mm. But it is a matter of DCS.
PS photo FW with EZ, for general reference only, due to different canopy design.
Just for general reference, this is factory drawing of Ta152 with gyrosight and "bar" :)