The data you show isn't proof of anything other than ineptitude of western agencies and the freedom of the press in the west. Go look for ICMB and warhead leaks, you'll always find better and more extensive documentation for NATO weapon systems. Does this mean the former communist block had no such weapons? No. It has to do with freedom of press and the legal system in the west making plans and docs public knowledge compared to a pretty locked down system in Russia and china.