Maybe this is a FOV related problem? If the FOV was authentic the sight and thus the reticle would be bigger and of correct size in relation to a fighter sized target, say, at 200yds distance as in example mentioned before? The FOV affects how we see the objects and geometries in relation to other objects in a 3D modelled world.
E.g. In IL2 you can test this by setting the biggest zoom as, AFAIK, this in the most realistic FOV setting.
Using a TIR vector the sights in AH look pretty authentic, altough the should be more head movement involved in maneuvering which would make the aiming more difficult under Gs. Currently the pilots probably sits a bit too tightly in his seat...
-C+