Maybe we want to export a downgraded version(with single pulse) while keeping the crown jewel(dual pulse version) with us for domestic use!This is a export ready product, eventually actual range will come out. There is no reason to downplay this perticular SAM.
That's why we are not displaying full radar/missile range in the current brochures. Also maybe we don't want to p** off the Israelis?
I think you're correct in one way that with time, we shall have full idea about Akash-NG's true range. Maybe until then, I need to hold the jingo inside me down and under control, lol