The Fighting position is weird. Could be the base stats for the bunkers are different for LOS so when they get the sight upgrade they disproportional have an effect on their max LOS? They have the same base value for their LOS meaning its something wrong with the upgrade or intended.
Either way I don't think both should self spot unless garrisoned but then again the fighting position gets the free riflenade with it so maybe its fair, just god damn annoying the OST suppresses so fast and has such a wide AOE with it.
sight can go, and the fighting position is also sightly cheaper, so there is that too.
As for ost bunker suppresing, if infantry could just walk it of, it would be a waste wouldnt it?
That said, I am starting to prefer the bunker over the mg42, so maybe something is wrong.