I took all screenshots in DS setting - which I don't know if it is as popular as HDR
switch to HDR settings then, it looks like this:
I have but the most superficial understanding of how DCS works - but I am sure that DS is sort of the new default, so the skins were made to work in both HDR and DS
my guess is also that they aim for models to look like this in flight :
I suppose that the developer still has not completely implemented DS in all models or it is still tweaking it, when 2.5 is out, I'll be able to set it better, until then, I am using a more forgiving specular map that can work with all the changes that take place from update to update.
personally, I still find HDR better than DS for all models as far as reflections go , although the terrain looks much better in DS.